Merge pull request #98 from enpaul/enp/refactor

Overhaul for stable

.github/scripts/setup-env.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+#
+# Environment setup script for the local project. Intended to be used with automation
+# to create a repeatable local environment for tests to be run in. The python env
+# this script creates can be accessed at the location defined by the CI_VENV variable
+# below.
+
+set -e;
+
+CI_CACHE=$HOME/.cache;
+POETRY_VERSION=1.3.2;
+
+mkdir --parents "$CI_CACHE";
+
+command -v python;
+python --version;
+
+curl --location https://install.python-poetry.org \
+  --output "$CI_CACHE/install-poetry.py" \
+  --silent \
+  --show-error;
+python "$CI_CACHE/install-poetry.py" \
+  --version "$POETRY_VERSION" \
+  --yes;
+poetry --version --no-ansi;
+poetry run pip --version;
+
+poetry install \
+  --quiet \
+  --remove-untracked \
+  --no-ansi;
+
+poetry env info;
+poetry run tox --version;

.github/workflows/ci.yaml

@@ -7,37 +7,85 @@ on:
     branches: ["devel"]
 jobs:
   Test:
+    name: Python ${{ matrix.python.version }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
         python:
-          - version: 3.6
-            toxenv: py36
-          - version: 3.7
-            toxenv: py37
-          - version: 3.8
+          - version: "3.8"
             toxenv: py38
-          - version: 3.9
+          - version: "3.9"
             toxenv: py39
+          - version: "3.10"
+            toxenv: py310
+          - version: "3.11"
+            toxenv: py311
+          - version: "3.12"
+            toxenv: py312
+      fail-fast: true
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python ${{ matrix.python.version }}
-        uses: actions/setup-python@v1
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install Python ${{ matrix.python.version }}
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python.version }}
-      - name: Install project
-        run: pip install .
-      - name: Run tests via ${{ matrix.python.toxenv }}
-        run: tox -e ${{ matrix.python.toxenv }}
+
+      - name: Configure Job Cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.cache/pypoetry/cache
+            ~/.poetry
+          # Including the hashed poetry.lock in the cache slug ensures that the cache
+          # will be invalidated, and thus all packages will be redownloaded, if the
+          # lockfile is updated
+          key: ${{ runner.os }}-${{ matrix.python.toxenv }}-${{ hashFiles('**/poetry.lock') }}
+
+      - name: Configure Path
+        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Configure Environment
+        run: .github/scripts/setup-env.sh
+
+      - name: Run Toxenv ${{ matrix.python.toxenv }}
+        run: poetry run tox -e ${{ matrix.python.toxenv }}
+
   Check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python 3.8
-        uses: actions/setup-python@v1
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install Python 3.10
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.8
-      - name: Install project
-        run: pip install .
-      - name: Run meta checks
-        run: tox -e static -e static-tests -e security
+          python-version: "3.10"
+
+      - name: Configure Job Cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.cache/pypoetry/cache
+            ~/.poetry
+          # Hardcoded 'py310' slug here lets this cache piggyback on the 'py310' cache
+          # that is generated for the tests above
+          key: ${{ runner.os }}-py310-${{ hashFiles('**/poetry.lock') }}
+
+      - name: Configure Path
+        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Configure Environment
+        run: .github/scripts/setup-env.sh
+
+      - name: Run Static Analysis Checks
+        run: poetry run tox -e static
+
+      - name: Run Static Analysis Checks (Tests)
+        run: poetry run tox -e static-tests
+
+      - name: Run Security Checks
+        run: poetry run tox -e security

.pre-commit-config.yaml

@@ -13,36 +13,68 @@
 # by the Poetry-managed dependency.
 #
 repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.3.0
+  - repo: local
     hooks:
       - id: end-of-file-fixer
+        name: end-of-file-fixer
+        entry: end-of-file-fixer
         language: system
+        types:
+          - text
+
       - id: fix-encoding-pragma
+        name: fix-encoding-pragma
+        entry: fix-encoding-pragma
+        language: system
         args:
           - "--remove"
+        types:
+          - python
+
+      - id: trailing-whitespace-fixer
+        name: trailing-whitespace-fixer
+        entry: trailing-whitespace-fixer
         language: system
-      - id: trailing-whitespace
-        language: system
+        types:
+          - text
+
       - id: check-merge-conflict
+        name: check-merge-conflict
+        entry: check-merge-conflict
         language: system
+        types:
+          - text
 
-  - repo: https://github.com/psf/black
-    rev: 20.8b1
-    hooks:
-      - id: black
-        language: system
-
-  - repo: https://github.com/asottile/blacken-docs
-    rev: v1.8.0
-    hooks:
-      - id: blacken-docs
-        language: system
-
-  - repo: https://github.com/asottile/reorder_python_imports
-    rev: v2.3.6
-    hooks:
       - id: reorder-python-imports
-        args:
-          - "--unclassifiable-application-module=tox_poetry_installer"
+        name: reorder-python-imports
+        entry: isort
         language: system
+        require_serial: true
+        types:
+          - python
+        args:
+          - "--filter-files"
+
+      - id: black
+        name: black
+        entry: black
+        language: system
+        types:
+          - python
+
+      - id: blacken-docs
+        name: blacken-docs
+        entry: blacken-docs
+        language: system
+        types:
+          - text
+
+      - id: mdformat
+        name: mdformat
+        entry: mdformat
+        language: system
+        args:
+          - "--number"
+          - "--wrap=90"
+        types:
+          - markdown

.pylintrc

@@ -1,46 +1,5 @@
-[MASTER]
-
-# A comma-separated list of package or module names from where C extensions may
-# be loaded. Extensions are loading into the active Python interpreter and may
-# run arbitrary code
-extension-pkg-whitelist=
-
-# Add files or directories to the blacklist. They should be base names, not
-# paths.
-ignore=
-
-# Add files or directories matching the regex patterns to the blacklist. The
-# regex matches against base names, not paths.
-ignore-patterns=
-
-# Python code to execute, usually for sys.path manipulation such as
-# pygtk.require().
-#init-hook=
-
-# Use multiple processes to speed up Pylint.
-jobs=1
-
-# List of plugins (as comma separated values of python modules names) to load,
-# usually to register additional checkers.
-load-plugins=
-
-# Pickle collected data for later comparisons.
-persistent=yes
-
-# Specify a configuration file.
-#rcfile=
-
-# Allow loading of arbitrary C extensions. Extensions are imported into the
-# active Python interpreter and may run arbitrary code.
-unsafe-load-any-extension=no
-
-
 [MESSAGES CONTROL]
 
-# Only show warnings with the listed confidence levels. Leave empty to show
-# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED
-confidence=
-
 # Disable the message, report, category or checker with the given id(s). You
 # can either give multiple identifiers separated by comma (,) or put this
 # option multiple times (only on the command line, not in the configuration
@@ -50,378 +9,46 @@ confidence=
 # --enable=similarities". If you want to run only the classes checker, but have
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
-disable=logging-fstring-interpolation, logging-format-interpolation, bad-continuation, line-too-long
-#print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,
-
-# Enable the message, report, category or checker with the given id(s). You can
-# either give multiple identifier separated by comma (,) or put this option
-# multiple time (only on the command line, not in the configuration file where
-# it should appear only once). See also the "--disable" option for examples.
-enable=
+disable=logging-fstring-interpolation
+        ,logging-format-interpolation
+        ,line-too-long
+        ,ungrouped-imports
+        ,typecheck
+        ,wrong-import-order
+        ,wrong-import-position
 
 
 [REPORTS]
 
-# Python expression which should return a note less than 10 (10 is the highest
-# note). You have access to the variables errors warning, statement which
-# respectively contain the number of errors / warnings messages and the total
-# number of statements analyzed. This is used by the global evaluation report
-# (RP0004).
-evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
-
-# Template used to display messages. This is a python new-style format string
-# used to format the message information. See doc for all details
-#msg-template=
-
 # Set the output format. Available formats are text, parseable, colorized, json
 # and msvs (visual studio).You can also give a reporter class, eg
 # mypackage.mymodule.MyReporterClass.
-output-format=text
-
-# Tells whether to display a full report or only the messages
-reports=no
-
-# Activate the evaluation score.
-score=yes
-
-
-[REFACTORING]
-
-# Maximum number of nested blocks for function / method body
-max-nested-blocks=5
+output-format=colorized
 
 
 [BASIC]
 
-# Naming hint for argument names
-argument-name-hint=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Regular expression matching correct argument names
-argument-rgx=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Naming hint for attribute names
-attr-name-hint=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Regular expression matching correct attribute names
-attr-rgx=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Bad variable names which should always be refused, separated by a comma
-bad-names=foo,bar,baz,toto,tutu,tata
-
-# Naming hint for class attribute names
-class-attribute-name-hint=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
-
-# Regular expression matching correct class attribute names
-class-attribute-rgx=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
-
-# Naming hint for class names
-class-name-hint=[A-Z_][a-zA-Z0-9]+$
-
-# Regular expression matching correct class names
-class-rgx=[A-Z_][a-zA-Z0-9]+$
-
-# Naming hint for constant names
-const-name-hint=(([A-Z_][A-Z0-9_]*)|(__.*__))$
-
-# Regular expression matching correct constant names
-const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__))$
-
-# Minimum line length for functions/classes that require docstrings, shorter
-# ones are exempt.
-docstring-min-length=-1
-
-# Naming hint for function names
-function-name-hint=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Regular expression matching correct function names
-function-rgx=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
 # Good variable names which should always be accepted, separated by a comma
-good-names=_,ip,ap
-
-# Include a hint for the correct naming format with invalid-name
-include-naming-hint=no
-
-# Naming hint for inline iteration names
-inlinevar-name-hint=[A-Za-z_][A-Za-z0-9_]*$
-
-# Regular expression matching correct inline iteration names
-inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
-
-# Naming hint for method names
-method-name-hint=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Regular expression matching correct method names
-method-rgx=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Naming hint for module names
-module-name-hint=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
-
-# Regular expression matching correct module names
-module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
-
-# Colon-delimited sets of names that determine each other's naming style when
-# the name regexes allow several styles.
-name-group=
-
-# Regular expression which should only match function or class names that do
-# not require a docstring.
-no-docstring-rgx=^_
-
-# List of decorators that produce properties, such as abc.abstractproperty. Add
-# to this list to register other decorators that produce valid properties.
-property-classes=abc.abstractproperty
-
-# Naming hint for variable names
-variable-name-hint=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
-
-# Regular expression matching correct variable names
-variable-rgx=(([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$
+good-names=_,ip,T
 
 
 [MISCELLANEOUS]
-
-# List of note tags to take in consideration, separated by a comma.
-#notes=FIXME,XXX,TODO
+# Not FIXME or TODO
 notes=XXX
 
 
-[LOGGING]
-
-# Logging modules to check that the string format arguments are in logging
-# function parameter format
-logging-modules=logging
-
-
 [SIMILARITIES]
 
-# Ignore comments when computing similarities.
-ignore-comments=yes
-
-# Ignore docstrings when computing similarities.
-ignore-docstrings=yes
-
 # Ignore imports when computing similarities.
 ignore-imports=yes
 
+# Ignore function signatures when computing similarities.
+ignore-signatures=yes
+
 # Minimum lines number of a similarity.
 min-similarity-lines=10
 
-
-[VARIABLES]
-
-# List of additional names supposed to be defined in builtins. Remember that
-# you should avoid to define new builtins when possible.
-additional-builtins=
-
-# Tells whether unused global variables should be treated as a violation.
-allow-global-unused-variables=yes
-
-# List of strings which can identify a callback function by name. A callback
-# name must start or end with one of those strings.
-callbacks=cb_,_cb
-
-# A regular expression matching the name of dummy variables (i.e. expectedly
-# not used).
-dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
-
-# Argument names that match this expression will be ignored. Default to name
-# with leading underscore
-ignored-argument-names=_.*|^ignored_|^unused_|^fxt_
-
-# Tells whether we should check for unused import in __init__ files.
-init-import=no
-
-# List of qualified module names which can have objects that can redefine
-# builtins.
-redefining-builtins-modules=six.moves,future.builtins
-
-
-[SPELLING]
-
-# Spelling dictionary name. Available dictionaries: none. To make it working
-# install python-enchant package.
-spelling-dict=
-
-# List of comma separated words that should not be checked.
-spelling-ignore-words=
-
-# A path to a file that contains private dictionary; one word per line.
-spelling-private-dict-file=
-
-# Tells whether to store unknown words to indicated private dictionary in
-# --spelling-private-dict-file option instead of raising a message.
-spelling-store-unknown-words=no
-
-
-[FORMAT]
-
-# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
-expected-line-ending-format=
-
-# Regexp for a line that is allowed to be longer than the limit.
-ignore-long-lines=^\s*(# )?<?https?://\S+>?$
-
-# Number of spaces of indent required inside a hanging  or continued line.
-indent-after-paren=4
-
-# String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
-# tab).
-indent-string='    '
-
-# Maximum number of characters on a single line.
-max-line-length=100
-
-# Maximum number of lines in a module
-max-module-lines=1000
-
-# List of optional constructs for which whitespace checking is disabled. `dict-
-# separator` is used to allow tabulation in dicts, etc.: {1  : 1,\n222: 2}.
-# `trailing-comma` allows a space between comma and closing bracket: (a, ).
-# `empty-line` allows space-only lines.
-no-space-check=trailing-comma,dict-separator
-
-# Allow the body of a class to be on the same line as the declaration if body
-# contains single statement.
-single-line-class-stmt=no
-
-# Allow the body of an if to be on the same line as the test if there is no
-# else.
-single-line-if-stmt=no
-
-
-[TYPECHECK]
-
-# List of decorators that produce context managers, such as
-# contextlib.contextmanager. Add to this list to register other decorators that
-# produce valid context managers.
-contextmanager-decorators=contextlib.contextmanager
-
-# List of members which are set dynamically and missed by pylint inference
-# system, and so shouldn't trigger E1101 when accessed. Python regular
-# expressions are accepted.
-generated-members=
-
-# Tells whether missing members accessed in mixin class should be ignored. A
-# mixin class is detected if its name ends with "mixin" (case insensitive).
-ignore-mixin-members=yes
-
-# This flag controls whether pylint should warn about no-member and similar
-# checks whenever an opaque object is returned when inferring. The inference
-# can return multiple potential results while evaluating a Python object, but
-# some branches might not be evaluated, which results in partial inference. In
-# that case, it might be useful to still emit no-member and other checks for
-# the rest of the inferred objects.
-ignore-on-opaque-inference=yes
-
-# List of class names for which member attributes should not be checked (useful
-# for classes with dynamically set attributes). This supports the use of
-# qualified names.
-ignored-classes=optparse.Values,thread._local,_thread._local
-
-# List of module names for which member attributes should not be checked
-# (useful for modules/projects where namespaces are manipulated during runtime
-# and thus existing member attributes cannot be deduced by static analysis. It
-# supports qualified module names, as well as Unix pattern matching.
-ignored-modules=
-
-# Show a hint with possible names when a member name was not found. The aspect
-# of finding the hint is based on edit distance.
-missing-member-hint=yes
-
-# The minimum edit distance a name should have in order to be considered a
-# similar match for a missing member name.
-missing-member-hint-distance=1
-
-# The total number of similar names that should be taken in consideration when
-# showing a hint for a missing member.
-missing-member-max-choices=1
-
-
-[CLASSES]
-
-# List of method names used to declare (i.e. assign) instance attributes.
-defining-attr-methods=__init__,__new__,setUp
-
-# List of member names, which should be excluded from the protected access
-# warning.
-exclude-protected=_asdict,_fields,_replace,_source,_make
-
-# List of valid names for the first argument in a class method.
-valid-classmethod-first-arg=cls
-
-# List of valid names for the first argument in a metaclass class method.
-valid-metaclass-classmethod-first-arg=mcs
-
-
-[IMPORTS]
-
-# Allow wildcard imports from modules that define __all__.
-allow-wildcard-with-all=no
-
-# Analyse import fallback blocks. This can be used to support both Python 2 and
-# 3 compatible code, which means that the block might have code that exists
-# only in one or another interpreter, leading to false positives when analysed.
-analyse-fallback-blocks=no
-
-# Deprecated modules which should not be used, separated by a comma
-deprecated-modules=regsub,TERMIOS,Bastion,rexec
-
-# Create a graph of external dependencies in the given file (report RP0402 must
-# not be disabled)
-ext-import-graph=
-
-# Create a graph of every (i.e. internal and external) dependencies in the
-# given file (report RP0402 must not be disabled)
-import-graph=
-
-# Create a graph of internal dependencies in the given file (report RP0402 must
-# not be disabled)
-int-import-graph=
-
-# Force import order to recognize a module as part of the standard
-# compatibility libraries.
-known-standard-library=
-
-# Force import order to recognize a module as part of a third party library.
-known-third-party=enchant
-
-
 [DESIGN]
 
 # Maximum number of arguments for function / method
 max-args=7
-
-# Maximum number of attributes for a class (see R0902).
-max-attributes=7
-
-# Maximum number of boolean expressions in a if statement
-max-bool-expr=5
-
-# Maximum number of branch for function / method body
-max-branches=12
-
-# Maximum number of locals for function / method body
-max-locals=15
-
-# Maximum number of parents for a class (see R0901).
-max-parents=7
-
-# Maximum number of public methods for a class (see R0904).
-max-public-methods=20
-
-# Maximum number of return / yield for function / method body
-max-returns=6
-
-# Maximum number of statements in function / method body
-max-statements=50
-
-# Minimum number of public methods for a class (see R0903).
-min-public-methods=2
-
-
-[EXCEPTIONS]
-
-# Exceptions that will emit a warning when being caught. Defaults to
-# "Exception"
-overgeneral-exceptions=Exception

CHANGELOG.md

@@ -0,0 +1,389 @@
+# changelog
+
+See also: [Github Release Page](https://github.com/enpaul/tox-poetry-installer/releases).
+
+## Version 1.0.0 Beta 1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/1.0.0b1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/1.0.0b1)
+
+- Update Poetry compatibility to include >=1.5
+- Update Tox compatibility to use Tox 4
+- Remove support for Tox 3
+- Remove deprecated `--require-poetry` command line option
+- Remove deprecated `install_dev_deps` confguration option
+- Remove deprecated `--parallelize-locked-install` command line option
+
+## Version 0.10.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.3/)
+
+- Update Poetry requirement to exclude usage with incompatible 1.5 release
+
+## Version 0.10.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.2/)
+
+- Update documentation with best practices and Poetry 1.2+ command syntax
+- Fix failed install of sdist package not raising an exception in multi-threaded mode.
+  Contributed by [chriskuehl](https://github.com/chriskuehl) (#86)
+
+## Version 0.10.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.1/)
+
+- Add PyPI classifier for Python-3.11 compatibility
+- Add CI support for Python-3.11
+- Add support for Poetry-1.3.x (#83)
+
+## Version 0.10.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.10.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.10.0/)
+
+- Add `poetry_dep_groups` option to support installing groups of Poetry dependencies.
+  Contributed by [Oshmoun](https://github.com/oshmoun) (#76)
+- Deprecate `install_dev_deps` option
+
+## Version 0.9.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.9.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.9.0/)
+
+- Add support for Poetry-1.2.x. Contributed by [Justin Wood](https://github.com/Callek)
+  (#73)
+- Update Black formatting to stable release version
+- Remove support for Python-3.6
+- Remove support for Poetry-1.1.x
+- Fix installing dependencies multiple times when transient dependencies are duplicated in
+  the dependency tree
+
+## Version 0.8.5
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.5),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.5/)
+
+- Fix Poetry version specification supporting the incompatible Poetry-1.2.0 release
+
+## Version 0.8.4
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.4),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.4/)
+
+- Fix issue where incompatible package versions were selected for installation when
+  multiple package versions were in the lockfile
+
+## Version 0.8.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.3/)
+
+- Add PyPI classifier for Python 3.10 compatibility
+
+## Version 0.8.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.2/)
+
+- Improve debug-level logging for package installation, and time how long installing each
+  package takes. Contributed by [Rebecca Turner](https://github.com/9999years) (#63).
+- Fix crash caused by the package-under-test depending on Poetry's unsafe dependencies
+  ([#65](https://github.com/enpaul/tox-poetry-installer/issues/65))
+
+## Version 0.8.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.1/)
+
+- Fix unintuitive behavior of the `install_project_deps` option by ensuring the specified
+  value always causes the implied action
+
+## Version 0.8.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.8.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.8.0/)
+
+- Add default installation of locked dependencies using thread workers, decreasing
+  environment provisioning times by ~90%
+- Add runtime option `--parallel-install-threads` to support configuring the number of
+  worker threads for parallel dependency installation
+- Add configuration option `install_project_deps` to support disabling the install of
+  project dependencies to an environment
+- Deprecate runtime option `--parallelize-locked-install`
+
+## Version 0.7.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.7.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.7.0/)
+
+- Add runtime option `--parallelize-locked-install` to support installing locked
+  dependencies in parallel to speed up test environment creation
+- Add config option `require_poetry` to allow per-environment control over whether the
+  plugin should force an error
+- Add unit tests for custom dependency processing and installation
+- Update internal logging system to reduce code duplication
+- Update documentation to improve readability
+- Deprecate runtime option `--require-poetry`
+
+## Version 0.6.4
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.4),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.4/)
+
+- Remove custom package compatibility checking logic from transient dependency resolution
+  process
+- Add integration with Poetry's compatibility
+  [`Marker`](https://github.com/python-poetry/poetry-core/blob/master/poetry/core/version/markers.py)
+  object system for determining package compatibility with the current platform
+  ([#43](https://github.com/enpaul/tox-poetry-installer/issues/43))
+- Add missing PyPI classifier for Python 3
+
+## Version 0.6.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.3/)
+
+- Update required `tox` version from `^3.0` to `^3.8` to avoid compatibility issues
+- Update logging messages to improve UX
+- Fix transient dependency packages being installed in a pseudo-random order due to Python
+  sets being unordered ([#41](https://github.com/enpaul/tox-poetry-installer/issues/41))
+- Fix outdated docstrings
+
+## Version 0.6.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.2/)
+
+- Update locked version of `py` to `1.10.0` to address
+  [CVE-2020-29651](https://nvd.nist.gov/vuln/detail/CVE-2020-29651)
+- Fix dependency identification failing when the package under test is a transient
+  dependency of a locked dependency specified for installation
+- Fix `AttributeError` being raised while creating the Tox self-provisioned environment
+  when using either the
+  [`minversion`](https://tox.readthedocs.io/en/latest/config.html#conf-minversion) or
+  [`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires) Tox config
+  options
+
+## Version 0.6.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.1/)
+
+- Update logging around transient dependency processing to improve debugging of dependency
+  installation problems
+- Fix regression around handling of Poetry's unsafe packages when the unsafe package is a
+  transient dependency ([#33](https://github.com/enpaul/tox-poetry-installer/issues/33))
+- Fix handling of Poetry's unsafe packages when the unsafe package is a primary
+  (environment or package) dependency
+
+## Version 0.6.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.6.0/)
+
+- Add `poetry` extra to support installing Poetry as a direct dependency of the plugin
+- Add `--require-poetry` runtime option to force Tox failure if Poetry is not installed
+- Update logging messages to improve UX around non-verbose messaging
+- Update error logging to avoid dumping stack traces
+- Update integration with Tox's `action` object to better manage internal state at runtime
+- Update documentation to more clearly cover more use cases
+- Remove `poetry` as a required dependency to support external Poetry installations
+
+First beta release :tada:
+
+## Version 0.5.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.2/)
+
+- Fix always attempting to install dependencies with incompatible python version
+  constraints
+- Fix always attempting to install dependencies with incompatible python platforms
+
+## Version 0.5.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.1/)
+
+- Add CI/Tox tests for Python-3.9
+- Update dependency processing to reduce duplication during installation
+- Update minimum python requirement to `3.6.1`
+- Fix `UnboundLocal` exception when not installing project dependencies
+
+## Version 0.5.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.5.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.5.0/)
+
+- Add option `locked_deps` to better support both locked and unlocked dependencies in a
+  single environment
+- Add blocking functionality when using `require_locked_deps = true` to prevent other
+  hooks from running after this one
+- Update documentation to include new configuration options and errors
+- Update documentation to improve future maintainability
+- Update module structure to move from single-file module to multi-file directory module
+- Fix `RecursionError` when installing locked dependencies that specify recursive
+  dependencies
+- Fix always reinstalling all locked dependencies on every run regardless of update status
+
+## Version 0.4.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.4.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.4.0/)
+
+- Add `install_dev_deps` configuration option for automatically installing all Poetry
+  dev-dependencies into a Tox testenv
+
+## Version 0.3.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.3.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.3.1/)
+
+- Fix error when installing an environment with no extras specified in the configuration
+- Fix problem where only the dependencies of the sequentially last extra would be
+  installed
+- Fix regression causing no project dependencies to be installed
+
+## Version 0.3.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.3.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.3.0/)
+
+- Add support for the Tox
+  [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras) configuration
+  parameter
+- Update runtime-skip-conditional checks to improve clarity and ease of future maintenance
+- Update lockfile parsing to avoid parsing it multiple times for a single testenv
+- Fix missing `poetry-core` dependency when using Poetry\<1.1.0
+
+## Version 0.2.4
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.4),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.4/)
+
+- Fix support for Poetry-1.1
+  ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- Include tests in sdist ([#8](https://github.com/enpaul/tox-poetry-installer/issues/8))
+
+## Version 0.2.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.3/)
+
+- Fix usage of the plugin in non-Poetry based projects
+  ([#1](https://github.com/enpaul/tox-poetry-installer/issues/1))
+- Fix treating dependency names as case sensitive when they shouldn't be
+  ([#7](https://github.com/enpaul/tox-poetry-installer/issues/7))
+
+## Version 0.2.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.2/)
+
+- Fix breaking when running Tox in projects that do not use Poetry for their
+  environment/dependency management
+  ([#1](https://github.com/enpaul/tox-poetry-installer/issues/1))
+
+## Version 0.2.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.1/)
+
+- Fix duplicate installation of transient environment dependencies
+- Fix logging error indicating all environments always have zero dependencies
+- Fix installing main dependencies when `skip_install` is false but `skipdist` is true
+
+## Version 0.2.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.2.0),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.2.0/)
+
+- Add support for per-environment configuration setting `require_locked_deps`
+- Add support for per-dependency lock requirement setting using `@poetry` suffix
+- Add support for coexisting locked and unlocked dependencies in a single test environment
+- Update documentation to include more usage examples
+- Update documentation to improve clarity around problems and drawbacks
+- Fix logging messages being inconsistently formatted
+- Fix raising the same exception for "locked dependency not found" and "locked dependency
+  specifies alternate version" errors
+- Fix plugin errors not reporting to Tox that they happened
+- Fix plugin errors not causing Tox to mark the env as failed
+
+## Version 0.1.3
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.3),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.3/)
+
+- Fix core functionality of installing dependencies from lockfile for the
+  package-under-development ("dev-package") built by Tox
+- Fix log messages not being displayed with Tox output
+- Add additional logging output for diagnostics
+- Update Poetry requirement to exclude upcoming Poetry-1.1.0 release which will break
+  compatibility
+
+This is the first release where the core functionality actually works as expected :tada:
+
+## Version 0.1.2
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.2),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.2/)
+
+- Test trivial functionality on Python-3.6 and Python-3.7
+- Fix disagreement between `pyproject.toml` and module metadata on what the current
+  version is
+- Fix constant named for PEP-440 that should have been named for PEP-508
+
+## Version 0.1.1
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.1),
+[PyPI](https://pypi.org/project/tox-poetry-installer/0.1.1/)
+
+- Add/update project documentation
+- Add static analysis and formatting enforcement automation to toxfile
+- Add security analysis to toxfile
+- Fix raising `KeyError` for unlocked dependencies
+- Fix mishandling of Poetry's "unsafe dependencies"
+- Lint, blacken, and generally improve code quality
+
+## Version 0.1.0
+
+View this release on:
+[Github](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.1.0),
+
+- Add support for installing Tox environment dependencies using Poetry from the Poetry
+  lockfile

CODE_OF_CONDUCT.md

@@ -1,129 +1,116 @@
-
 # Contributor Covenant Code of Conduct
 
 ## Our Pledge
 
-We as members, contributors, and leaders pledge to make participation in our
-community a harassment-free experience for everyone, regardless of age, body
-size, visible or invisible disability, ethnicity, sex characteristics, gender
-identity and expression, level of experience, education, socio-economic status,
-nationality, personal appearance, race, religion, or sexual identity
-and orientation.
+We as members, contributors, and leaders pledge to make participation in our community a
+harassment-free experience for everyone, regardless of age, body size, visible or
+invisible disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal appearance,
+race, religion, or sexual identity and orientation.
 
-We pledge to act and interact in ways that contribute to an open, welcoming,
-diverse, inclusive, and healthy community.
+We pledge to act and interact in ways that contribute to an open, welcoming, diverse,
+inclusive, and healthy community.
 
 ## Our Standards
 
-Examples of behavior that contributes to a positive environment for our
-community include:
+Examples of behavior that contributes to a positive environment for our community include:
 
-* Demonstrating empathy and kindness toward other people
-* Being respectful of differing opinions, viewpoints, and experiences
-* Giving and gracefully accepting constructive feedback
-* Accepting responsibility and apologizing to those affected by our mistakes,
-  and learning from the experience
-* Focusing on what is best not just for us as individuals, but for the
-  overall community
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes, and learning
+  from the experience
+- Focusing on what is best not just for us as individuals, but for the overall community
 
 Examples of unacceptable behavior include:
 
-* The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-* Trolling, insulting or derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
+- The use of sexualized language or imagery, and sexual attention or advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email address, without
+  their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional
+  setting
 
 ## Enforcement Responsibilities
 
-Community leaders are responsible for clarifying and enforcing our standards of
-acceptable behavior and will take appropriate and fair corrective action in
-response to any behavior that they deem inappropriate, threatening, offensive,
-or harmful.
+Community leaders are responsible for clarifying and enforcing our standards of acceptable
+behavior and will take appropriate and fair corrective action in response to any behavior
+that they deem inappropriate, threatening, offensive, or harmful.
 
-Community leaders have the right and responsibility to remove, edit, or reject
-comments, commits, code, wiki edits, issues, and other contributions that are
-not aligned to this Code of Conduct, and will communicate reasons for moderation
-decisions when appropriate.
+Community leaders have the right and responsibility to remove, edit, or reject comments,
+commits, code, wiki edits, issues, and other contributions that are not aligned to this
+Code of Conduct, and will communicate reasons for moderation decisions when appropriate.
 
 ## Scope
 
-This Code of Conduct applies within all community spaces, and also applies when
-an individual is officially representing the community in public spaces.
-Examples of representing our community include using an official e-mail address,
-posting via an official social media account, or acting as an appointed
-representative at an online or offline event.
+This Code of Conduct applies within all community spaces, and also applies when an
+individual is officially representing the community in public spaces. Examples of
+representing our community include using an official e-mail address, posting via an
+official social media account, or acting as an appointed representative at an online or
+offline event.
 
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-[INSERT CONTACT METHOD].
-All complaints will be reviewed and investigated promptly and fairly.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the
+community leaders responsible for enforcement at \[INSERT CONTACT METHOD\]. All complaints
+will be reviewed and investigated promptly and fairly.
 
-All community leaders are obligated to respect the privacy and security of the
-reporter of any incident.
+All community leaders are obligated to respect the privacy and security of the reporter of
+any incident.
 
 ## Enforcement Guidelines
 
-Community leaders will follow these Community Impact Guidelines in determining
-the consequences for any action they deem in violation of this Code of Conduct:
+Community leaders will follow these Community Impact Guidelines in determining the
+consequences for any action they deem in violation of this Code of Conduct:
 
 ### 1. Correction
 
 **Community Impact**: Use of inappropriate language or other behavior deemed
 unprofessional or unwelcome in the community.
 
-**Consequence**: A private, written warning from community leaders, providing
-clarity around the nature of the violation and an explanation of why the
-behavior was inappropriate. A public apology may be requested.
+**Consequence**: A private, written warning from community leaders, providing clarity
+around the nature of the violation and an explanation of why the behavior was
+inappropriate. A public apology may be requested.
 
 ### 2. Warning
 
-**Community Impact**: A violation through a single incident or series
-of actions.
+**Community Impact**: A violation through a single incident or series of actions.
 
-**Consequence**: A warning with consequences for continued behavior. No
-interaction with the people involved, including unsolicited interaction with
-those enforcing the Code of Conduct, for a specified period of time. This
-includes avoiding interactions in community spaces as well as external channels
-like social media. Violating these terms may lead to a temporary or
-permanent ban.
+**Consequence**: A warning with consequences for continued behavior. No interaction with
+the people involved, including unsolicited interaction with those enforcing the Code of
+Conduct, for a specified period of time. This includes avoiding interactions in community
+spaces as well as external channels like social media. Violating these terms may lead to a
+temporary or permanent ban.
 
 ### 3. Temporary Ban
 
-**Community Impact**: A serious violation of community standards, including
-sustained inappropriate behavior.
+**Community Impact**: A serious violation of community standards, including sustained
+inappropriate behavior.
 
-**Consequence**: A temporary ban from any sort of interaction or public
-communication with the community for a specified period of time. No public or
-private interaction with the people involved, including unsolicited interaction
-with those enforcing the Code of Conduct, is allowed during this period.
-Violating these terms may lead to a permanent ban.
+**Consequence**: A temporary ban from any sort of interaction or public communication with
+the community for a specified period of time. No public or private interaction with the
+people involved, including unsolicited interaction with those enforcing the Code of
+Conduct, is allowed during this period. Violating these terms may lead to a permanent ban.
 
 ### 4. Permanent Ban
 
-**Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior,  harassment of an
-individual, or aggression toward or disparagement of classes of individuals.
+**Community Impact**: Demonstrating a pattern of violation of community standards,
+including sustained inappropriate behavior, harassment of an individual, or aggression
+toward or disparagement of classes of individuals.
 
-**Consequence**: A permanent ban from any sort of public interaction within
-the community.
+**Consequence**: A permanent ban from any sort of public interaction within the community.
 
 ## Attribution
 
-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 2.0,
+available at https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
 
-Community Impact Guidelines were inspired by [Mozilla's code of conduct
-enforcement ladder](https://github.com/mozilla/diversity).
-
-[homepage]: https://www.contributor-covenant.org
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder](https://github.com/mozilla/diversity).
 
 For answers to common questions about this code of conduct, see the FAQ at
 https://www.contributor-covenant.org/faq. Translations are available at
 https://www.contributor-covenant.org/translations.
+
+[homepage]: https://www.contributor-covenant.org

LICENSE.md

@@ -1,11 +1,17 @@
-## Copyright 2020 Ethan Paul
+## Copyright 2020, 2022 Ethan Paul
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
-and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+to whom the Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of
-the Software.
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
 
-**THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.**
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

Makefile

@@ -19,7 +19,7 @@ clean-py:
 	rm --recursive --force ./dist
 	rm --recursive --force ./build
 	rm --recursive --force ./*.egg-info
-	rm --recursive --force __pycache__/
+	rm --recursive --force ./**/__pycache__/
 
 clean: clean-tox clean-py; ## Clean temp build/cache files and directories
 
@@ -30,7 +30,11 @@ source: ## Build Python source distribution package
 	poetry build --format sdist
 
 test: ## Run the project testsuite(s)
-	poetry run tox --recreate
+	poetry run tox --recreate --parallel
 
-publish: wheel source ## Build and upload to pypi (requires $PYPI_API_KEY be set)
+dev: ## Create the local dev environment
+	poetry install --extras poetry --sync
+	poetry run pre-commit install
+
+publish: test wheel source ## Build and upload to pypi (requires $PYPI_API_KEY be set)
 	@poetry publish --username __token__ --password $(PYPI_API_KEY)

README.md

@@ -1,349 +1,342 @@
 # tox-poetry-installer
 
-A plugin for [Tox](https://tox.readthedocs.io/en/latest/) that allows test environment
-dependencies to be installed using [Poetry](https://python-poetry.org/) from its lockfile.
+A plugin for [Tox](https://tox.readthedocs.io/en/latest/) that lets you install test
+environment dependencies from the [Poetry](https://python-poetry.org/) lockfile.
 
-⚠️ **This project is alpha software and should not be used in production environments** ⚠️
-
-[![ci-status](https://github.com/enpaul/tox-poetry-installer/workflows/CI/badge.svg?event=push)](https://github.com/enpaul/tox-poetry-installer/actions)
-[![license](https://img.shields.io/pypi/l/tox-poetry-installer)](https://opensource.org/licenses/MIT)
-[![pypi-version](https://img.shields.io/pypi/v/tox-poetry-installer)](https://pypi.org/project/tox-poetry-installer/)
-[![python-versions](https://img.shields.io/pypi/pyversions/tox-poetry-installer)](https://www.python.org)
+[![CI Status](https://github.com/enpaul/tox-poetry-installer/workflows/CI/badge.svg?event=push)](https://github.com/enpaul/tox-poetry-installer/actions)
+[![PyPI Version](https://img.shields.io/pypi/v/tox-poetry-installer)](https://pypi.org/project/tox-poetry-installer/)
+[![PyPI Downloads](https://img.shields.io/pypi/dm/tox-poetry-installer)](https://libraries.io/pypi/tox-poetry-installer)
+[![License](https://img.shields.io/pypi/l/tox-poetry-installer)](https://opensource.org/licenses/MIT)
+[![Python Supported Versions](https://img.shields.io/pypi/pyversions/tox-poetry-installer)](https://www.python.org)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
-**Documentation**
+⚠️ **This project is beta software and is under active development** ⚠️
 
-* [Installation](#installation)
-* [Quick Start](#quick-start)
-* [Reference and Usage](#reference-and-usage)
-  * [Config Option Reference](#config-option-reference)
-  * [Error Reference](#error-reference)
-  * [Example Config](#example-config)
-* [Known Drawbacks and Problems](#known-drawbacks-and-problems)
-* [Why would I use this?](#why-would-i-use-this) (What problems does this solve?)
-* [Developing](#developing)
-* [Contributing](#contributing)
-* [Roadmap](#roadmap)
-  * [Path to Beta](#path-to-beta)
-  * [Path to Stable](#path-to-stable)
+## Documentation
 
-Related resources:
-* [Poetry Python Project Manager](https://python-poetry.org/)
-* [Tox Automation Project](https://tox.readthedocs.io/en/latest/)
-* [Poetry Dev-Dependencies Tox Plugin](https://github.com/sinoroc/tox-poetry-dev-dependencies)
-* [Poetry Tox Plugin](https://github.com/tkukushkin/tox-poetry)
-* [Other Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html)
+- [Feature Overview](#feature-overview)
+- [Using the Plugin](#user-documentation)
+  - [Installing](#installing)
+  - [Quick Start](#quick-start)
+  - [References](#references)
+    - [Config Options](#configuration-options)
+    - [Runtime Options](#runtime-options)
+    - [Errors](#errors)
+  - [Other Notes](#other-notes)
+    - [Unsupported Tox config options](#unsupported-tox-config-options)
+    - [Updating locked dependencies in a testenv](#updating-locked-dependencies-in-a-testenv)
+    - [Using with an unmanaged Poetry installation](#using-with-an-unmanaged-poetry-installation)
+- [Developing the Plugin](#developer-documentation)
+- [Road Map](#road-map)
 
+See the
+[Changelog](https://github.com/enpaul/tox-poetry-installer/blob/devel/CHANGELOG.md) for
+release history.
 
-## Installation
+*See also: [official Tox plugins](https://tox.readthedocs.io/en/latest/plugins.html) and
+[the official Poetry documentation on using Tox](https://python-poetry.org/docs/faq/#is-tox-supported)*
 
-Add the plugin as a development dependency of a Poetry project:
+## Feature Overview
 
-```
-~ $: poetry add tox-poetry-installer --dev
+- Manage package versions in exactly one place and with exactly one tool: Poetry.
+- Ensure CI/CD and other automation tools are using the same package versions that you are
+  in your local development environment.
+- Add only the packages or custom groups you need to a Tox test environment, instead of
+  everything in your lockfile.
+- Directly integrate with Poetry, re-using your existing package indexes and credentials,
+  with no additional configuration.
+- Wherever possible, built-in Tox config options are always respected and their behavior
+  kept consistent.
+- Extremely configurable. Every feature can be disabled or enabled for any given Tox test
+  environment.
+- Friendly to other Tox plugins and supports a wide range of environments.
+
+## User Documentation
+
+*This section is for users looking to integrate the plugin with their project or CI
+system. For information on contributing to the plugin please see the
+[Developer Docs](#developer-documentation)*
+
+### Installing
+
+The recommended way to install the plugin is to add it to a project using Poetry:
+
+```bash
+poetry add -G dev tox-poetry-installer[poetry]
 ```
 
-Confirm that the plugin is installed, and Tox recognizes it, by checking the Tox version:
+> ℹ️ **Note:** Always install the plugin with the `[poetry]` extra, unless you are
+> [managing the Poetry installation yourself](#externally-managed-poetry-installation).
+
+Alternatively, it can be installed directly to a virtual environment using Pip, though
+this is not recommended:
+
+```bash
+source somevenv/bin/activate
+pip install tox-poetry-installer
+```
+
+Alternatively alternatively, it can be installed using the Tox
+[`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires) option by
+adding the below to `tox.ini`, though this is also not recommended:
+
+```ini
+requires =
+    tox-poetry-installer[poetry] == 0.10.2
+```
+
+After installing, check that Tox recognizes the plugin by running
+`poetry run tox --version`. The command should give output similar to below:
 
 ```
-~ $: poetry run tox --version
-3.20.0 imported from .venv/lib64/python3.8/site-packages/tox/__init__.py
+3.20.0 imported from .venv/lib64/python3.10/site-packages/tox/__init__.py
 registered plugins:
-    tox-poetry-installer-0.5.0 at .venv/lib64/python3.8/site-packages/tox_poetry_installer.py
+    tox-poetry-installer-0.10.2 at .venv/lib64/python3.10/site-packages/tox_poetry_installer/__init__.py
 ```
 
-If using Pip, ensure that the plugin is installed to the same environment as Tox:
+### Quick Start
 
-```
-# Calling the virtualenv's 'pip' binary directly will cause pip to install to that virtualenv
-~ $: /path/to/my/automation/virtualenv/bin/pip install tox
-~ $: /path/to/my/automation/virtualenv/bin/pip install tox-poetry-installer
-```
+Congratulations! 🎉 Just by installing the plugin your Tox config is already using locked
+dependencies: when Tox builds and installs your project package to a test environment,
+your project package's dependencies will be installed from the lockfile.
 
-**Note:** While it is possible to install this plugin using Tox's
-[`requires`](https://tox.readthedocs.io/en/latest/config.html#conf-requires)
-configuration option, it is not recommended. Dependencies from the `requires` option are
-installed using the default Tox installation backend which opens up the
-[possibility of transient dependency problems](#why-would-i-use-this) in your automation
-environment.
+Now lets update an example `tox.ini` to install the other test environment dependencies
+from the lockfile.
 
-
-## Quick Start
-
-To add dependencies from the lockfile to a Tox environment, add the option `locked_deps`
-to the environment configuration and list names of dependencies (with no version
-specifier) under it:
+A `testenv` from the example `tox.ini` we're starting with is below:
 
 ```ini
 [testenv]
 description = Some very cool tests
-locked_deps =
-    black
-    pylint
-    mypy
-commands = ...
-```
-
-The standard `deps` option can be used in parallel with the `locked_deps` option to
-install unlocked dependencies (dependencies not in the lockfile) alongside locked
-dependencies:
-
-```ini
-[testenv]
-description = Some very cool tests
-locked_deps =
-    black
-    pylint
-    mypy
 deps =
-    pytest == 6.1.1
-    pytest-cov >= 2.10, <2.11
+    black == 20.8b1
+    pylint >=2.4.4,<2.7.0
+    mypy <0.800
 commands = ...
 ```
 
-Alternatively, to quickly install all Poetry dev-dependencies to a Tox environment, add the
-`install_dev_deps =  true` option to the environment configuration.
+To update the config so that the testenv dependencies are installed from the lockfile, we
+can replace the built-in
+[`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option with the
+`locked_deps` option provided by the plugin, and then remove the inline version
+specifiers. With these changes the three testenv dependencies (as well as all of their
+dependencies) will be installed from the lockfile when the test environment is recreated:
 
-**Note:** Regardless of the settings outlined above, all dependencies of the project package (the
-one Tox is testing) will always be installed from the lockfile.
+```ini
+[testenv]
+description = Some very cool tests
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```
 
+We can also add the `require_locked_deps` option to the test environment. This will both
+block any other install tools (another plugin or Tox itself) from installing dependencies
+to the Tox environment and also cause Tox to fail if the test environment also uses the
+built-in [`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option:
 
-## Reference and Usage
+```ini
+[testenv]
+description = Some very cool tests
+require_locked_deps = true
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```
 
-### Config Option Reference
+> ℹ️ **Note:** Settings configured on the main `testenv` environment are inherited by
+> child test environments (for example, `testenv:foo`). To override this, specify the
+> setting in the child environment with a different value.
+
+Alternatively, we can skip specifying all of our dependencies for a test environment in
+the Tox config and install Poetry dependency groups directly:
+
+```ini
+[testenv]
+description = Some very cool tests
+require_locked_deps = true
+poetry_dep_groups =
+    dev
+commands = ...
+```
+
+> ℹ️ **Note:** The `install_dev_deps` configuration option is deprecated. See
+> [Configuration Options](#configuration-options) for more information.
+
+Finally, we can also install an unlocked dependency (a dependency which doesn't take its
+version from the Poetry lockfile) into the test environment alongside the locked ones. We
+need to remove the `require_locked_deps = true` option, otherwise the environment will
+error, and then we can add the unlocked dependency using the built-in
+[`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) option:
+
+```ini
+[testenv]
+description = Some very cool tests
+deps =
+    pytest >= 5.6.0,<6.0.0
+locked_deps =
+    black
+    pylint
+    mypy
+commands = ...
+```
+
+## References
+
+### Configuration Options
 
 All options listed below are Tox environment options and can be applied to one or more
 environment sections of the `tox.ini` file. They cannot be applied to the global Tox
 configuration section.
 
-**NOTE:** Environment settings applied to the main `testenv` environment will be
-inherited by child environments (i.e. `testenv:foo`) unless they are explicitly
-overridden by the child environment's configuration.
+> ℹ️ **Note:** Settings configured on the main `testenv` environment are inherited by
+> child test environments (for example, `testenv:foo`). To override this, specify the
+> setting in the child environment with a different value.
 
-| Option                | Type            | Default | Usage                                          |
-|:----------------------|:----------------|:--------|:-----------------------------------------------|
-| `locked_deps`         | Multi-line list | `[]`    | Names of packages in the Poetry lockfile to install to the Tox environment. All dependencies specified here (and their dependencies) will be installed to the Tox environment using the version the Poetry lockfile specifies for them. |
-| `require_locked_deps` | Bool            | `false` | Indicates whether the environment should allow unlocked dependencies (dependencies not in the Poetry lockfile) to be installed alongside locked dependencies. If `true` then installation of unlocked dependencies will be blocked and an error will be raised if the `deps` option specifies any values. |
-| `install_dev_deps`    | Bool            | `false` | Indicates whether all Poetry development dependencies should be installed to the environment. Provides a quick and easy way to install all dev-dependencies without needing to specify them individually. |
+| Option                 |  Type   | Default | Description                                                                                                                                                                                                                                                                                                                                                          |
+| :--------------------- | :-----: | :-----: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `locked_deps`          |  List   |  `[]`   | Names of packages to install to the test environment from the Poetry lockfile. Transient dependencies (packages required by these dependencies) are automatically included.                                                                                                                                                                                          |
+| `require_locked_deps`  | Boolean |  False  | Whether the plugin should block attempts to install unlocked dependencies to the test environment. If enabled, then the [`tox_testenv_install_deps`](https://tox.readthedocs.io/en/latest/plugins.html#tox.hookspecs.tox_testenv_install_deps) plugin hook will be intercepted and an error will be raised if the test environment has the `deps` option configured. |
+| `install_project_deps` | Boolean |  True   | Whether all of the Poetry primary dependencies for the project package should be installed to the test environment.                                                                                                                                                                                                                                                  |
+| `require_poetry`       | Boolean |  False  | Whether Tox should be forced to fail if the plugin cannot import Poetry locally. If `False` then the plugin will be skipped for the test environment if Poetry cannot be imported. If `True` then the plugin will force the environment to error and the Tox run to fail.                                                                                            |
+| `poetry_dep_groups`    |  List   |  `[]`   | Names of Poetry dependency groups specified in `pyproject.toml` to install to the test environment.                                                                                                                                                                                                                                                                  |
 
-### Error Reference
+### Runtime Options
 
-* `LockedDepVersionConflictError` - Indicates that a locked dependency included a PEP-508 version
-  specifier (i.e. `pytest >=6.0, <6.1`). Locked dependencies always take their version from the
-  Poetry lockfile so specifying a specific version for a locked dependency is not supported.
-* `LockedDepNotFoundError` - Indicates that a locked dependency could not be found in the Poetry
-  lockfile. This can be solved by [adding the dependency using Poetry](https://python-poetry.org/docs/cli/#add).
-* `ExtraNotFoundError` - Indicates that the Tox `extras` option specified a project extra that
-  Poetry does not know about. This may be due to a misconfigured `pyproject.toml` or out of date
-  lockfile.
-* `LockedDepsRequiredError` - Indicates that an environment with `require_locked_deps = true` also
-  specified unlocked dependencies using Tox's `deps` option. This can be solved by either setting
-  `require_locked_deps = false` (the default) or removing the `deps` option from the environment
-  configuration.
+All arguments listed below can be passed to the `tox` command to modify runtime behavior
+of the plugin.
 
-### Example Config
+| Argument                     |  Type   | Default | Description                                                                                                                                                                                                                                                                          |
+| :--------------------------- | :-----: | :-----: | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `--parallel-install-threads` | Integer |  `10`   | Number of worker threads to use to install dependencies in parallel. Installing in parallel with more threads can greatly speed up the install process, but can cause race conditions during install. Pass this option with the value `0` to entirely disable parallel installation. |
 
-```ini
-[tox]
-envlist = py, foo, bar, baz
-isolated_build = true
+### Errors
 
-# The base testenv will always use locked dependencies and only ever installs the project package
-# (and its dependencies) and the two pytest dependencies listed below
-[testenv]
-description = Some very cool tests
-require_locked_deps = true
-locked_deps =
-    pytest
-    pytest-cov
-commands = ...
+There are several errors that the plugin can encounter for a test environment when Tox is
+run. If an error is encountered then the status of the test environment that caused the
+error will be set to one of the "Status" values below to indicate what the error was.
 
-# This environment also requires locked dependencies, but the "skip_install" setting means that
-# the project dependencies will not be installed to the environment from the lockfile
-[testenv:foo]
-description = FOObarbaz
-skip_install = true
-require_locked_deps = true
-locked_deps =
-    requests
-    toml
-    ruamel.yaml
-commands = ...
+| Status/Name                     | Cause                                                                                                                                                                                                                           |
+| :------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| `ExtraNotFoundError`            | Indicates that the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras) config option specified an extra that is not configured by Poetry in `pyproject.toml`.                                              |
+| `LockedDepVersionConflictError` | Indicates that an item in the `locked_deps` config option includes a [PEP-508 version specifier](https://www.python.org/dev/peps/pep-0508/#grammar) (ex: `pytest >=6.0, <6.1`).                                                 |
+| `LockedDepNotFoundError`        | Indicates that an item specified in the `locked_deps` config option does not match the name of a package in the Poetry lockfile.                                                                                                |
+| `LockedDepsRequiredError`       | Indicates that a test environment with the `require_locked_deps` config option set to `true` also specified unlocked dependencies using the [`deps`](https://tox.readthedocs.io/en/latest/config.html#conf-deps) config option. |
+| `PoetryNotInstalledError`       | Indicates that the `poetry` module could not be imported under the current runtime environment, and `require_poetry = true` was specified.                                                                                      |
 
-# This environment allows unlocked dependencies to be installed ad-hoc. Below, the "mypy" and
-# "pylint" dependencies (and their dependencies) will be installed from the Poetry lockfile but the
-# "black" dependency will be installed using the default Tox backend. Note, this environment does
-# not specify "require_locked_deps = true" to allow the unlocked "black" dependency without raising
-# an error.
-[testenv:bar]
-description = fooBARbaz
-locked_deps =
-    mypy
-    pylint
-deps =
-    black
-commands = ...
+> ℹ️ **Note:** One or more of these errors can be caused by the `pyproject.toml` being out
+> of sync with the Poetry lockfile. If this is the case, than a warning will be logged
+> when Tox is run.
 
-# This environment requires locked dependencies but does not specify any. Instead it specifies the
-# "install_dev_deps = true" option which will cause all of the Poetry dev-dependencies to be
-# installed from the lockfile.
-[testenv:baz]
-description = foobarBAZ
-install_dev_deps = true
-require_locked_deps = true
-commands = ...
+### Other Notes
+
+#### Unsupported Tox config options
+
+Below are the built-in Tox config options that are not respected by this plugin. All of
+these options are made obsolete by the Poetry lockfile: either they aren't needed or their
+equivalent functionality is instead taken directly from the package details Poetry stores
+in its lockfile.
+
+> ℹ️ **Note:** The unsupported Tox config options will still apply to unlocked
+> dependencies being installed with the default Tox installation backend.
+
+- [`install_command`](https://tox.readthedocs.io/en/latest/config.html#conf-install_command)
+- [`pip_pre`](https://tox.readthedocs.io/en/latest/config.html#conf-pip_pre)
+- [`download`](https://tox.readthedocs.io/en/latest/config.html#conf-download)
+- [`indexserver`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
+- [`usedevelop`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
+
+#### Updating locked dependencies in a testenv
+
+When Poetry updates the version of a package in the lockfile (using either `poetry lock`
+or `poetry update`) then the plugin will automatically use this new version to install the
+package to a test environment; there is no need to manually update `tox.ini` after
+updating the Poetry lockfile.
+
+However, the plugin cannot determine when the lockfile is updated. If a Tox test
+environment has already been created then it will need to be recreated (using Tox's
+built-in
+[`--recreate`](https://tox.readthedocs.io/en/latest/example/basic.html#forcing-re-creation-of-virtual-environments)
+option) for the new version to be found and installed.
+
+> ℹ️ **Note:** To force Tox to always recreate a test environment the
+> [`recreate`](https://tox.readthedocs.io/en/latest/config.html#conf-recreate) config
+> option can be set.
+
+#### Using with an unmanaged Poetry installation
+
+In CI/CD systems, automation environments, or other Python environments where the loaded
+site packages are not managed by Poetry, it can be useful to manage the local installation
+of Poetry externally. This also helps to avoid problems that can be caused by the
+`--no-root`, `--without dev`, or `--sync` arguments to the `poetry install` command which,
+in some situations, can cause Poetry to uninstall itself if Poetry is specified as a
+dependency of one of the packages it is managing (like this plugin). To support these use
+cases, this plugin specifies the `poetry` package as an optional dependency that can be
+installed using a setuptools extra also named `poetry`.
+
+> ⚠️ **Warning:** This plugin requires Poetry to function. If the plugin is installed
+> without the `poetry` setuptools extra then Poetry must be installed independently for
+> the plugin to function properly.
+
+To skip installing the `poetry` package as a dependency of `tox-poetry-installer`, do not
+specify the `poetry` extra when adding the plugin:
+
+```bash
+# Adding the package without the "[poetry]" extra specifier so that
+# Poetry is not added as a transient dev-dependency:
+poetry add -G dev tox-poetry-installer
+
+# Adding the package with the "[poetry]" extra specifier, so the Poetry
+# package will be added to the environment and tracked in the lockfile:
+poetry add -G dev tox-poetry-installer[poetry]
 ```
 
+Once the plugin is installed- either with or without the Poetry extra- you can validate
+that the plugin will run correctly with the following command. This command checks that
+all three required components (Tox, Poetry, and the plugin itself) are available in the
+current Python environment:
 
-## Known Drawbacks and Problems
-
-* The following `tox.ini` configuration options have no effect on the dependencies installed from
-  the Poetry lockfile (note that they will still affect unlocked dependencies):
-  * [`install_command`](https://tox.readthedocs.io/en/latest/config.html#conf-install_command)
-  * [`pip_pre`](https://tox.readthedocs.io/en/latest/config.html#conf-pip_pre)
-  * [`downloadcache`](https://tox.readthedocs.io/en/latest/config.html#conf-downloadcache) (deprecated)
-  * [`download`](https://tox.readthedocs.io/en/latest/config.html#conf-download)
-  * [`indexserver`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
-  * [`usedevelop`](https://tox.readthedocs.io/en/latest/config.html#conf-indexserver)
-
-* Tox will not automatically detect changes to the locked dependencies and so
-  environments will not be automatically rebuilt when locked dependencies are changed.
-  When changing the locked dependencies (or their versions) the environments will need to
-  be manually rebuilt using either the `-r`/`--recreate` CLI option or the
-  `recreate = true` option in `tox.ini`.
-
-* There are a handful of packages that cannot be installed from the lockfile, whether as specific
-  dependencies or as transient dependencies (dependencies of dependencies). This is due to
-  [an ongoing discussion in the Poetry project](https://github.com/python-poetry/poetry/issues/1584);
-  the list of dependencies that cannot be installed from the lockfile can be found
-  [here](https://github.com/python-poetry/poetry/blob/cc8f59a31567f806be868aba880ae0642d49b74e/poetry/puzzle/provider.py#L55).
-  This plugin will skip these dependencies entirely, but log a warning when they are encountered.
-
-
-## Why would I use this?
-
-**Introduction**
-
-The lockfile is a file generated by a package manager for a project that records what
-dependencies are installed, the versions of those dependencies, and any additional metadata that
-the package manager needs to recreate the local project environment. This allows developers
-to have confidence that a bug they are encountering that may be caused by one of their
-dependencies will be reproducible on another device. In addition, installing a project
-environment from a lockfile gives confidence that automated systems running tests or performing
-builds are using the same environment as a developer.
-
-[Poetry](https://python-poetry.org/) is a project dependency manager for Python projects, and
-so it creates and manages a lockfile so that its users can benefit from all the features
-described above. [Tox](https://tox.readthedocs.io/en/latest/#what-is-tox) is an automation tool
-that allows Python developers to run tests suites, perform builds, and automate tasks within
-self-contained [Python virtual environments](https://docs.python.org/3/tutorial/venv.html).
-To make these environments useful Tox supports installing dependencies in each environment.
-However, since these environments are created on the fly and Tox does not maintain a lockfile,
-there can be subtle differences between the dependencies a developer is using and the
-dependencies Tox uses.
-
-This is where this plugin comes into play.
-
-By default Tox uses [Pip](https://docs.python.org/3/tutorial/venv.html) to install the
-PEP-508 compliant dependencies to a test environment. This plugin extends the default
-Tox dependency installation behavior to support installing dependencies using a Poetry-based
-installation method that makes use of the dependency metadata from Poetry's lockfile.
-
-**The Problem**
-
-Environment dependencies for a Tox environment are usually specified in PEP-508 format, like
-the below example:
-
-```ini
-# from tox.ini
-...
-
-[testenv]
-description = Some very cool tests
-deps =
-    foo == 1.2.3
-    bar >=1.3,<2.0
-    baz
-
-...
+```bash
+python -c '\
+  import tox;\
+  import tox_poetry_installer;\
+  from poetry.poetry import Poetry;\
+'
 ```
 
-Let's assume these dependencies are also useful during development, so they can be added to the
-Poetry environment using this command:
+> ℹ️ **Note:** To force Tox to fail if Poetry is not installed, add the
+> `require_poetry = true` option to the tox `[testenv]` configuration. See the
+> [Config Options](#configuration-options) for more information.
 
- ```
- poetry add --dev \
-    foo==1.2.3 \
-    bar>=1.3,<2.0 \
-    baz
- ```
+## Developer Documentation
 
- However there is a potential problem that could arise from each of these environment
- dependencies that would _only_ appear in the Tox environment and not in the Poetry
- environment in use by a developer:
+All project contributors and participants are expected to adhere to the
+[Contributor Covenant Code of Conduct, v2](CODE_OF_CONDUCT.md)
+([external link](https://www.contributor-covenant.org/version/2/0/code_of_conduct/)).
 
- * **The `foo` dependency is pinned to a specific version:** let's imagine a security
-   vulnerability is discovered in `foo` and the maintainers release version `1.2.4` to fix
-   it. A developer can run `poetry remove foo` and then `poetry add foo^1.2` to get the new
-   version, but the Tox environment is left unchanged. The development environment, as defined by
-   the lockfile, is now patched against the vulnerability but the Tox environment is not.
+The `devel` branch has the latest (and potentially unstable) changes. The stable releases
+are tracked on [Github](https://github.com/enpaul/tox-poetry-installer/releases),
+[PyPi](https://pypi.org/project/tox-poetry-installer/#history), and in the
+[Changelog](CHANGELOG.md).
 
-* **The `bar` dependency specifies a dynamic range:** a dynamic range allows a range of
-  versions to be installed, but the lockfile will have an exact version specified so that
-  the Poetry environment is reproducible; this allows versions to be updated with
-  `poetry update` rather than with the `remove` and `add` commands used above. If the
-  maintainers of `bar` release version `1.6.0` then the Tox environment will install it
-  because it is valid for the specified version range. Meanwhile the Poetry environment will
-  continue to install the version from the lockfile until `poetry update bar` explicitly
-  updates it. The development environment is now has a different version of `bar` than the Tox
-  environment.
+- To report a bug, request a feature, or ask for assistance, please
+  [open an issue on the Github repository](https://github.com/enpaul/tox-poetry-installer/issues/new).
+- To report a security concern or code of conduct violation, please contact the project
+  author directly at **‌me \[at‌\] enp dot‎ ‌one**.
+- To submit an update, please
+  [fork the repository](https://docs.github.com/en/enterprise/2.20/user/github/getting-started-with-github/fork-a-repo)
+  and [open a pull request](https://github.com/enpaul/tox-poetry-installer/compare).
 
-* **The `baz` dependency is unpinned:** unpinned dependencies are
-  [generally a bad idea](https://python-poetry.org/docs/faq/#why-are-unbound-version-constraints-a-bad-idea),
-  but here it can cause real problems. Poetry will interpret an unbound dependency using
-  [the carrot requirement](https://python-poetry.org/docs/dependency-specification/#caret-requirements)
-  but Pip (via Tox) will interpret it as a wildcard. If the latest version of `baz` is `1.0.0`
-  then `poetry add baz` will result in a constraint of `baz>=1.0.0,<2.0.0` while the Tox
-  environment will have a constraint of `baz==*`. The Tox environment can now install an
-  incompatible version of `baz` and any errors that causes cannot be replicated using `poetry update`.
+Developing this project requires [Python 3.10+](https://www.python.org/downloads/) and
+[Poetry 1.4](https://python-poetry.org/docs/#installation) or later. GNU Make can
+optionally be used to quickly setup a local development environment, but this is not
+required.
 
-All of these problems can apply not only to the dependencies specified for a Tox environment,
-but also to the dependencies of those dependencies, those dependencies' dependencies, and so on.
-
-**The Solution**
-
-This plugin allows dependencies specified in Tox environment take their version directly from
-the Poetry lockfile without needing an independent version to be specified in the Tox
-environment configuration. The modified version of the example environment given below appears
-less stable than the one presented above because it does not specify any versions for its
-dependencies:
-
-```ini
-# from tox.ini
-...
-
-[testenv]
-description = Some very cool tests
-require_locked_deps = true
-locked_deps =
-    foo
-    bar
-    baz
-
-...
-```
-
-However with the `tox-poetry-installer` plugin installed the `require_locked_deps = true`
-setting means that Tox will install these dependencies from the Poetry lockfile so that the
-version installed to the Tox environment exactly matches the version Poetry is managing. When
-`poetry update` updates the lockfile with new versions of these dependencies, Tox will
-automatically install these new versions without needing any changes to the configuration.
-
-
-## Developing
-
-This project requires a developer to have Poetry version 1.0+ installed on their workstation, see
-the [installation instructions here](https://python-poetry.org/docs/#installation).
+To setup a local development environment:
 
 ```bash
 # Clone the repository...
@@ -352,72 +345,64 @@ git clone https://github.com/enpaul/tox-poetry-installer.git
 # ...over SSH
 git clone git@github.com:enpaul/tox-poetry-installer.git
 
-# Create a the local project virtual environment and install dependencies
-cd tox-poetry-installer
-poetry install
+cd tox-poetry-installer/
 
-# Install pre-commit hooks
-poetry run pre-commit install
+# Create and configure the local development environment
+make dev
 
-# Run tests and static analysis
-poetry run tox
+# Run tests and CI locally
+make test
+
+# See additional make targets
+make help
 ```
 
+> ℹ️ **Note:** The pre-commit hooks require dependencies in the Poetry environment to run.
+> To make a commit with the pre-commit hooks, you will need to run `poetry run git commit`
+> or, alternatively,
+> [launch an environment shell](https://python-poetry.org/docs/cli/#shell).
 
-## Contributing
+## Road Map
 
-All project contributors and participants are expected to adhere to the
-[Contributor Covenant Code of Conduct, Version 2](CODE_OF_CONDUCT.md).
+This project is under active development and is classified as beta software, ready for
+production environments on a provisional basis only.
 
-The `devel` branch has the latest (potentially unstable) changes. The
-[tagged versions](https://github.com/enpaul/tox-poetry-installer/releases) correspond to the
-releases on PyPI.
-
-* To report a bug, request a feature, or ask for assistance, please
-  [open an issue on the Github repository](https://github.com/enpaul/tox-poetry-installer/issues/new).
-* To report a security concern or code of conduct violation, please contact the project author
-  directly at **ethan dot paul at enp dot one**.
-* To submit an update, please
-  [fork the repository](https://docs.github.com/en/enterprise/2.20/user/github/getting-started-with-github/fork-a-repo)
-  and
-  [open a pull request](https://github.com/enpaul/tox-poetry-installer/compare).
-
-
-## Roadmap
-
-This project is under active development and is classified as alpha software, not yet ready
-for usage in production environments.
-
-* Beta classification will be assigned when the initial feature set is finalized
-* Stable classification will be assigned when the test suite covers an acceptable number of
-  use cases
+- Beta classification was assigned with
+  [v0.6.0](https://github.com/enpaul/tox-poetry-installer/releases/tag/0.6.0)
+- Stable classification will be assigned when the test suite covers an acceptable number
+  of use cases
 
 ### Path to Beta
 
-- [X] Verify that primary package dependencies (from the `.package` env) are installed
-      correctly using the Poetry backend.
-- [X] Support the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras)
-      Tox configuration option ([#4](https://github.com/enpaul/tox-poetry-installer/issues/4))
-- [X] Add per-environment Tox configuration option to fall back to default installation
-      backend.
-- [ ] Add warnings when an unsupported Tox configuration option is detected while using the
-      Poetry backend. ([#5](https://github.com/enpaul/tox-poetry-installer/issues/5))
-- [X] Add trivial tests to ensure the project metadata is consistent between the pyproject.toml
-      and the module constants.
-- [X] Update to use [poetry-core](https://github.com/python-poetry/poetry-core) and
-      improve robustness of the Tox and Poetry module imports
-      to avoid potentially breaking API changes in upstream packages. ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
-- [ ] Find and implement a way to mitigate the [UNSAFE_DEPENDENCIES issue](https://github.com/python-poetry/poetry/issues/1584) in Poetry.
-      ([#6](https://github.com/enpaul/tox-poetry-installer/issues/6))
-- [ ] Fix logging to make proper use of Tox's logging reporter infrastructure ([#3](https://github.com/enpaul/tox-poetry-installer/issues/3))
-- [X] Add configuration option for installing all dev-dependencies to a testenv ([#14](https://github.com/enpaul/tox-poetry-installer/issues/14))
+- [x] Verify that primary package dependencies (from the `.package` env) are installed
+  correctly using the Poetry backend.
+- [x] Support the [`extras`](https://tox.readthedocs.io/en/latest/config.html#conf-extras)
+  Tox configuration option ([#4](https://github.com/enpaul/tox-poetry-installer/issues/4))
+- [x] Add per-environment Tox configuration option to fall back to default installation
+  backend.
+- [ ] ~Add warnings when an unsupported Tox configuration option is detected while using
+  the Poetry backend.~ ([#5](https://github.com/enpaul/tox-poetry-installer/issues/5))
+- [x] Add trivial tests to ensure the project metadata is consistent between the
+  pyproject.toml and the module constants.
+- [x] Update to use [poetry-core](https://github.com/python-poetry/poetry-core) and
+  improve robustness of the Tox and Poetry module imports to avoid potentially breaking
+  API changes in upstream packages.
+  ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- [ ] ~Find and implement a way to mitigate the
+  [UNSAFE_DEPENDENCIES issue](https://github.com/python-poetry/poetry/issues/1584) in
+  Poetry.~ ([#6](https://github.com/enpaul/tox-poetry-installer/issues/6))
+- [x] Fix logging to make proper use of Tox's logging reporter infrastructure
+  ([#3](https://github.com/enpaul/tox-poetry-installer/issues/3))
+- [x] Add configuration option for installing all dev-dependencies to a testenv
+  ([#14](https://github.com/enpaul/tox-poetry-installer/issues/14))
 
 ### Path to Stable
 
 Everything in Beta plus...
 
-- [ ] Add tests for each feature version of Tox between 2.3 and 3.20
-- [ ] Add tests for Python-3.6, 3.7, and 3.8
-- [X] Add Github Actions based CI
-- [ ] Add CI for CPython, PyPy, and Conda
-- [ ] Add CI for Linux and Windows
+- [ ] Fully replace dependency on `poetry` with dependency on `poetry-core`
+  ([#2](https://github.com/enpaul/tox-poetry-installer/issues/2))
+- [x] Add comprehensive unit tests
+- [ ] ~Add tests for each feature version of Tox between 3.8 and 3.20~
+- [x] Add tests for Python-3.6, 3.7, 3.8, and 3.9
+- [x] Add Github Actions based CI

pyproject.toml

@@ -1,9 +1,9 @@
 [tool.poetry]
 name = "tox-poetry-installer"
-version = "0.5.1"
+version = "1.0.0b1"
 license = "MIT"
 authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
-description = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
+description = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
 repository = "https://github.com/enpaul/tox-poetry-installer/"
 packages = [
   {include = "tox_poetry_installer"},
@@ -15,17 +15,19 @@ include = [
 keywords = ["tox", "poetry", "plugin"]
 readme = "README.md"
 classifiers = [
-  "Development Status :: 3 - Alpha",
+  "Development Status :: 4 - Beta",
   "Environment :: Plugins",
   "Framework :: tox",
   "Intended Audience :: Developers",
   "License :: OSI Approved :: MIT License",
   "Natural Language :: English",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.6",
-  "Programming Language :: Python :: 3.7",
+  "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: Implementation :: CPython",
 ]
 
@@ -33,27 +35,35 @@ classifiers = [
 poetry_installer = "tox_poetry_installer"
 
 [tool.poetry.dependencies]
-python = "^3.6.1"
-poetry = "^1.0.0"
-poetry-core = "^1.0.0"
-tox = "^2.3.0 || ^3.0.0"
+python = "^3.8"
+cleo = ">=1.0,<3.0"
+poetry = "^1.5.0"
+poetry-core = "^1.1.0"
+tox = "^4.1"
 
-[tool.poetry.dev-dependencies]
-bandit = "^1.6.2"
-black = { version = "^20.8b1", allow-prereleases = true }
-blacken-docs = "^1.8.0"
-ipython = { version = "^7.18.1", python = "^3.7" }
-mypy = "^0.782"
-pre-commit = "^2.7.1"
-pre-commit-hooks = "^3.3.0"
-pylint = "^2.4.4"
-pytest = "^6.0.2"
-pytest-cov = "^2.10.1"
-reorder-python-imports = "^2.3.5"
-safety = "^1.9.0"
-toml = "^0.10.1"
-tox = "^3.20.0"
+[tool.poetry.group.dev.dependencies]
+bandit = {version = "^1.7.7", python = "^3.10"}
+black = {version = "^24.3.0", python = "^3.10"}
+blacken-docs = {version = "^1.18.0", python = "^3.10"}
+ipython = {version = "^8.10.1", python = "^3.10"}
+isort = {version = "^5.13.2", python = "^3.10"}
+mdformat = {version = "^0.7", python = "^3.10"}
+mdformat-gfm = {version = "^0.3", python = "^3.10"}
+mypy = {version = "^1.11.1", python = "^3.10"}
+pre-commit = {version = "^3.8.0", python = "^3.10"}
+pre-commit-hooks = {version = "^4.6.0", python = "^3.10"}
+pylint = {version = "^3.2.6", python = "^3.10"}
+pytest = {version = "^8.3.2", python = "^3.10"}
+pytest-cov = {version = "^5.0.0", python = "^3.10"}
+toml = {version = "^0.10.1", python = "^3.10"}
+tox = "^4.1"
+types-toml = {version = "^0.10.1", python = "^3.10"}
+
+[tool.isort]
+profile = "black"
+force_single_line = "true"
+lines_after_imports = 2
 
 [build-system]
-requires = ["poetry-core>=1.0.0"]
+requires = ["poetry-core>=1.1.0"]
 build-backend = "poetry.core.masonry.api"

tests/fixtures.py

@@ -0,0 +1,71 @@
+# pylint: disable=missing-module-docstring,missing-function-docstring,unused-argument,too-few-public-methods,protected-access
+import time
+from pathlib import Path
+from typing import List
+
+import poetry.factory
+import poetry.installation.executor
+import poetry.installation.operations.operation
+import poetry.utils.env
+import pytest
+import tox.tox_env.python.virtual_env.runner
+
+import tox_poetry_installer.hooks._tox_on_install_helpers
+
+
+TEST_PROJECT_PATH = Path(__file__).parent.resolve() / "test-project"
+
+FAKE_VENV_PATH = Path("nowhere")
+
+
+class MockVirtualEnv:
+    """Mock class for the :class:`poetry.utils.env.VirtualEnv` and :class:`tox.venv.VirtualEnv`"""
+
+    def __init__(self, *args, **kwargs):
+        self.env_dir = FAKE_VENV_PATH
+        self.installed = []
+
+    @staticmethod
+    def is_valid_for_marker(*args, **kwargs):
+        return True
+
+    @staticmethod
+    def get_version_info():
+        return (1, 2, 3)
+
+
+class MockExecutor:
+    """Mock class for the :class:`poetry.installation.executor.Executor`"""
+
+    def __init__(self, env: MockVirtualEnv, **kwargs):
+        self.env = env
+
+    def execute(
+        self, operations: List[poetry.installation.operations.operation.Operation]
+    ):
+        self.env.installed.extend([operation.package for operation in operations])
+        time.sleep(1)
+
+
+@pytest.fixture
+def mock_venv(monkeypatch):
+    monkeypatch.setattr(
+        tox_poetry_installer.hooks._tox_on_install_helpers,
+        "convert_virtualenv",
+        lambda venv: venv,
+    )
+    monkeypatch.setattr(poetry.installation.executor, "Executor", MockExecutor)
+    monkeypatch.setattr(
+        tox.tox_env.python.virtual_env.runner, "VirtualEnvRunner", MockVirtualEnv
+    )
+    monkeypatch.setattr(poetry.utils.env, "VirtualEnv", MockVirtualEnv)
+
+
+@pytest.fixture(scope="function")
+def mock_poetry_factory(monkeypatch):
+    project = poetry.factory.Factory().create_poetry(cwd=TEST_PROJECT_PATH)
+
+    def mock_factory(*args, **kwargs):
+        return project
+
+    monkeypatch.setattr(poetry.factory.Factory, "create_poetry", mock_factory)

tests/test-project/poetry.lock

@@ -0,0 +1,505 @@
+[[package]]
+name = "appdirs"
+version = "1.4.4"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "attrs"
+version = "20.3.0"
+description = "Classes Without Boilerplate"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
+
+[[package]]
+name = "certifi"
+version = "2020.12.5"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "chardet"
+version = "4.0.0"
+description = "Universal encoding detector for Python 2 and 3"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "click"
+version = "7.1.2"
+description = "Composable command line interface toolkit"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "colorama"
+version = "0.4.4"
+description = "Cross-platform colored terminal text."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "distlib"
+version = "0.3.1"
+description = "Distribution utilities"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "filelock"
+version = "3.0.12"
+description = "A platform independent file lock."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "flask"
+version = "1.1.2"
+description = "A simple framework for building complex web applications."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+click = ">=5.1"
+itsdangerous = ">=0.24"
+Jinja2 = ">=2.10.1"
+Werkzeug = ">=0.15"
+
+[package.extras]
+dev = ["pytest", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
+docs = ["sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
+dotenv = ["python-dotenv"]
+
+[[package]]
+name = "idna"
+version = "2.10"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "importlib-metadata"
+version = "3.10.1"
+description = "Read metadata from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "importlib-resources"
+version = "5.1.2"
+description = "Read resources from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+zipp = {version = ">=0.4", markers = "python_version < \"3.8\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
+[[package]]
+name = "itsdangerous"
+version = "1.1.0"
+description = "Various helpers to pass data to untrusted environments and back."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "jinja2"
+version = "2.11.3"
+description = "A very fast and expressive template engine."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+MarkupSafe = ">=0.23"
+
+[package.extras]
+i18n = ["Babel (>=0.8)"]
+
+[[package]]
+name = "markupsafe"
+version = "1.1.1"
+description = "Safely add untrusted strings to HTML/XML markup."
+category = "main"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+
+[[package]]
+name = "packaging"
+version = "20.9"
+description = "Core utilities for Python packages"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+pyparsing = ">=2.0.2"
+
+[[package]]
+name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
+[[package]]
+name = "py"
+version = "1.10.0"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pyparsing"
+version = "2.4.7"
+description = "Python parsing module"
+category = "main"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
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+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:7fed13866cf14bba33e7176717346713881f56d9d2bcebab207f7a036f41b850"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:6f1e273a344928347c1290119b493a1f0303c52f5a5eae5f16d74f48c15d4a85"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:feb7b34d6325451ef96bc0e36e1a6c0c1c64bc1fbec4b854f4529e51887b1621"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win32.whl", hash = "sha256:22c178a091fc6630d0d045bdb5992d2dfe14e3259760e713c490da5323866c39"},
+    {file = "MarkupSafe-1.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:b7d644ddb4dbd407d31ffb699f1d140bc35478da613b441c582aeb7c43838dd8"},
+    {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
+]
+packaging = [
+    {file = "packaging-20.9-py2.py3-none-any.whl", hash = "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"},
+    {file = "packaging-20.9.tar.gz", hash = "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5"},
+]
+pluggy = [
+    {file = "pluggy-0.13.1-py2.py3-none-any.whl", hash = "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"},
+    {file = "pluggy-0.13.1.tar.gz", hash = "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0"},
+]
+py = [
+    {file = "py-1.10.0-py2.py3-none-any.whl", hash = "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"},
+    {file = "py-1.10.0.tar.gz", hash = "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3"},
+]
+pyparsing = [
+    {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
+    {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
+]
+python-dateutil = [
+    {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
+    {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
+]
+requests = [
+    {file = "requests-2.25.1-py2.py3-none-any.whl", hash = "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"},
+    {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+tox = [
+    {file = "tox-3.23.0-py2.py3-none-any.whl", hash = "sha256:e007673f3595cede9b17a7c4962389e4305d4a3682a6c5a4159a1453b4f326aa"},
+    {file = "tox-3.23.0.tar.gz", hash = "sha256:05a4dbd5e4d3d8269b72b55600f0b0303e2eb47ad5c6fe76d3576f4c58d93661"},
+]
+typing-extensions = [
+    {file = "typing_extensions-3.7.4.3-py2-none-any.whl", hash = "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"},
+    {file = "typing_extensions-3.7.4.3-py3-none-any.whl", hash = "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918"},
+    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
+]
+urllib3 = [
+    {file = "urllib3-1.26.4-py2.py3-none-any.whl", hash = "sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df"},
+    {file = "urllib3-1.26.4.tar.gz", hash = "sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937"},
+]
+virtualenv = [
+    {file = "virtualenv-20.4.3-py2.py3-none-any.whl", hash = "sha256:83f95875d382c7abafe06bd2a4cdd1b363e1bb77e02f155ebe8ac082a916b37c"},
+    {file = "virtualenv-20.4.3.tar.gz", hash = "sha256:49ec4eb4c224c6f7dd81bb6d0a28a09ecae5894f4e593c89b0db0885f565a107"},
+]
+werkzeug = [
+    {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
+    {file = "Werkzeug-1.0.1.tar.gz", hash = "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"},
+]
+zipp = [
+    {file = "zipp-3.4.1-py3-none-any.whl", hash = "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"},
+    {file = "zipp-3.4.1.tar.gz", hash = "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76"},
+]

tests/test-project/pyproject.toml

@@ -0,0 +1,19 @@
+[tool.poetry]
+name = "test-project"
+version = "0.0.0"
+license = "MIT"
+authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
+description = "A fake project for testing"
+
+[tool.poetry.dependencies]
+python = "^3.6.1"
+requests = "^2.25.1"
+tox = "^3.23.0"
+python-dateutil = "^2.8.1"
+Flask = "^1.1.2"
+toml = "^0.10.2"
+attrs = "^20.3.0"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"

tests/test_installer.py

@@ -0,0 +1,97 @@
+# pylint: disable=missing-module-docstring,redefined-outer-name,unused-argument,unused-import,protected-access
+import time
+from unittest import mock
+
+import poetry.factory
+import poetry.installation.executor
+import pytest
+import tox.tox_env.python.virtual_env.runner
+
+import tox_poetry_installer.hooks._tox_on_install_helpers
+
+from .fixtures import mock_poetry_factory
+from .fixtures import mock_venv
+
+
+def test_deduplication(mock_venv, mock_poetry_factory):
+    """Test that the installer does not install duplicate dependencies"""
+    project = poetry.factory.Factory().create_poetry(None)
+    packages: tox_poetry_installer.hooks._tox_on_install_helpers.PackageMap = {
+        item.name: item for item in project.locker.locked_repository().packages
+    }
+
+    venv = tox.tox_env.python.virtual_env.runner.VirtualEnvRunner()
+    to_install = [packages["toml"], packages["toml"]]
+
+    tox_poetry_installer.hooks._tox_on_install_helpers.install_package(
+        project, venv, to_install
+    )
+
+    assert len(set(to_install)) == len(venv.installed)  # pylint: disable=no-member
+
+
+def test_parallelization(mock_venv, mock_poetry_factory):
+    """Test that behavior is consistent between parallel and non-parallel usage"""
+    project = poetry.factory.Factory().create_poetry(None)
+    packages: tox_poetry_installer.hooks._tox_on_install_helpers.PackageMap = {
+        item.name: item for item in project.locker.locked_repository().packages
+    }
+
+    to_install = [
+        packages["toml"],
+        packages["toml"],
+        packages["tox"],
+        packages["requests"],
+        packages["python-dateutil"],
+        packages["attrs"],
+    ]
+
+    venv_sequential = tox.tox_env.python.virtual_env.runner.VirtualEnvRunner()
+    start_sequential = time.time()
+    tox_poetry_installer.hooks._tox_on_install_helpers.install_package(
+        project, venv_sequential, to_install, 0
+    )
+    sequential = time.time() - start_sequential
+
+    venv_parallel = tox.tox_env.python.virtual_env.runner.VirtualEnvRunner()
+    start_parallel = time.time()
+    tox_poetry_installer.hooks._tox_on_install_helpers.install_package(
+        project, venv_parallel, to_install, 5
+    )
+    parallel = time.time() - start_parallel
+
+    # The mock delay during package install is static (one second) so these values should all
+    # be within microseconds of each other
+    assert parallel < sequential
+    assert round(parallel * 5) == round(sequential)
+    assert round(sequential) == len(set(to_install))
+    assert round(parallel * 5) == len(set(to_install))
+
+
+@pytest.mark.parametrize("num_threads", (0, 8))
+def test_propagates_exceptions_during_installation(
+    mock_venv, mock_poetry_factory, num_threads
+):
+    """Assert that an exception which occurs during installation is properly raised.
+
+    Regression test for https://github.com/enpaul/tox-poetry-installer/issues/86
+    """
+    project = poetry.factory.Factory().create_poetry(None)
+    packages: tox_poetry_installer.hooks._tox_on_install_helpers.PackageMap = {
+        item.name: item for item in project.locker.locked_repository().packages
+    }
+    to_install = [packages["toml"]]
+    venv = tox.tox_env.python.virtual_env.runner.VirtualEnvRunner()
+    fake_exception = ValueError("my testing exception")
+
+    with mock.patch.object(
+        poetry.installation.executor,
+        "Executor",
+        **{"return_value.execute.side_effect": fake_exception},
+    ):
+        with pytest.raises(ValueError) as exc_info:
+            tox_poetry_installer.hooks._tox_on_install_helpers.install_package(
+                project, venv, to_install, num_threads
+            )
+
+    assert exc_info.value is fake_exception

tests/test_metadata.py

@@ -3,6 +3,7 @@
 The next best thing to having one source of truth is having a way to ensure all of your
 sources of truth agree with each other.
 """
+
 from pathlib import Path
 
 import toml

tests/test_transients.py

@@ -0,0 +1,79 @@
+# pylint: disable=missing-module-docstring,redefined-outer-name,unused-argument,unused-import,protected-access
+import poetry.factory
+import poetry.utils.env
+import pytest
+
+import tox_poetry_installer.hooks._tox_on_install_helpers
+from tox_poetry_installer import exceptions
+
+from .fixtures import mock_poetry_factory
+from .fixtures import mock_venv
+
+
+def test_allow_missing():
+    """Test that the ``allow_missing`` parameter works as expected"""
+    with pytest.raises(exceptions.LockedDepNotFoundError):
+        tox_poetry_installer.hooks._tox_on_install_helpers.identify_transients(
+            "luke-skywalker", {}, None
+        )
+
+    assert not tox_poetry_installer.hooks._tox_on_install_helpers.identify_transients(
+        "darth-vader", {}, None, allow_missing=["darth-vader"]
+    )
+
+
+def test_exclude_pep508():
+    """Test that dependencies specified in PEP508 format are properly excluded"""
+    for version in [
+        "foo==1.0",
+        "foo==1",
+        "foo>2.0.0",
+        "foo<=9.3.4.7.8",
+        "foo>999,<=4.6",
+        "foo>1234 || foo<2021.01.01",
+        "foo!=7",
+        "foo~=0.8",
+        "foo!=9,==7",
+        "=>foo",
+    ]:
+        with pytest.raises(exceptions.LockedDepVersionConflictError):
+            tox_poetry_installer.hooks._tox_on_install_helpers.identify_transients(
+                version, {}, None
+            )
+
+
+def test_functional(mock_poetry_factory, mock_venv):
+    """Integration tests for the :func:`identify_transients` function
+
+    Trivially test that it resolves dependencies properly and that the parent package
+    is always the last in the returned list.
+    """
+    project = poetry.factory.Factory().create_poetry(None)
+    packages = tox_poetry_installer.hooks._tox_on_install_helpers.build_package_map(
+        project
+    )
+    venv = poetry.utils.env.VirtualEnv()  # pylint: disable=no-value-for-parameter
+
+    requests_requires = [
+        packages["certifi"][0],
+        packages["chardet"][0],
+        packages["idna"][0],
+        packages["urllib3"][0],
+        packages["requests"][0],
+    ]
+
+    transients = tox_poetry_installer.hooks._tox_on_install_helpers.identify_transients(
+        "requests", packages, venv
+    )
+
+    assert all((item in requests_requires) for item in transients)
+    assert all((item in transients) for item in requests_requires)
+
+    for package in [packages["requests"][0], packages["tox"][0], packages["flask"][0]]:
+        transients = (
+            tox_poetry_installer.hooks._tox_on_install_helpers.identify_transients(
+                package.name, packages, venv
+            )
+        )
+        assert transients[-1] == package
+        assert len(transients) == len(set(transients))

tox.ini

@@ -1,62 +1,79 @@
 [tox]
-envlist = py36, py37, py38, py39, static, static-tests, security
-isolated_build = true
+envlist = py3{8,9,10,11,12} static, static-tests, security
 skip_missing_interpreters = true
 
 [testenv]
 description = Run the tests
 require_locked_deps = true
+require_poetry = true
 locked_deps =
     pytest
     pytest-cov
     toml
 commands =
-    pytest --cov {envsitepackagesdir}/tox_poetry_installer --cov-config {toxinidir}/.coveragerc --cov-report term-missing tests/
+    pytest {toxinidir}/tests/ \
+      --cov {toxinidir}/tox_poetry_installer \
+      --cov-config {toxinidir}/.coveragerc \
+      --cov-report term-missing
 
 [testenv:static]
 description = Static formatting and quality enforcement
-basepython = python3.8
+basepython = py310
 platform = linux
 ignore_errors = true
-require_locked_deps = true
 locked_deps =
-    pre-commit
-    pre-commit-hooks
     black
     blacken-docs
-    reorder-python-imports
-    pylint
+    isort
+    mdformat
+    mdformat-gfm
     mypy
+    pre-commit
+    pre-commit-hooks
+    pylint
+    types-toml
 commands =
-    pre-commit run --all-files
-    pylint --rcfile {toxinidir}/.pylintrc {toxinidir}/tox_poetry_installer/
-    mypy --ignore-missing-imports --no-strict-optional {toxinidir}/tox_poetry_installer/
+    pre-commit run \
+      --all-files
+    pylint {toxinidir}/tox_poetry_installer/ \
+      --rcfile {toxinidir}/.pylintrc
+    mypy {toxinidir}/tox_poetry_installer/ \
+      --ignore-missing-imports \
+      --no-strict-optional
 
 [testenv:static-tests]
 description = Static formatting and quality enforcement for the tests
-basepython = python3.8
+basepython = py310
 platform = linux
-ingore_errors = true
-require_locked_deps = true
+ignore_errors = true
 locked_deps =
     pylint
+    pytest
     mypy
+    toml
+    types-toml
 commands =
-    pylint --rcfile {toxinidir}/.pylintrc {toxinidir}/tests/
-    mypy --ignore-missing-imports --no-strict-optional {toxinidir}/tests/
+    pylint {toxinidir}/tests/ \
+      --rcfile {toxinidir}/.pylintrc
+    mypy {toxinidir}/tests/ \
+      --ignore-missing-imports \
+      --no-strict-optional
 
 [testenv:security]
 description = Security checks
-basepython = python3.8
+basepython = py310
 platform = linux
-ingore_errors = true
-require_locked_deps = true
+ignore_errors = true
+skip_install = true
 locked_deps =
     bandit
     safety
     poetry
 commands =
-    bandit --recursive --quiet {toxinidir}/tox_poetry_installer/
-    bandit --recursive --quiet --skip B101 {toxinidir}/tests/
-    poetry export --format requirements.txt --output {envtmpdir}/requirements.txt --without-hashes --dev
-    safety check --bare --file {envtmpdir}/requirements.txt
+    bandit {toxinidir}/tox_poetry_installer/ \
+      --recursive \
+      --quiet
+    bandit {toxinidir}/tests/ \
+      --recursive \
+      --quiet \
+      --skip B101

tox_poetry_installer/__about__.py

@@ -1,7 +1,7 @@
 # pylint: disable=missing-docstring
 __title__ = "tox-poetry-installer"
-__summary__ = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
-__version__ = "0.5.1"
+__summary__ = "A plugin for Tox that lets you install test environment dependencies from the Poetry lockfile"
+__version__ = "1.0.0b1"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]

tox_poetry_installer/__init__.py

@@ -1,3 +1,4 @@
 # pylint: disable=missing-docstring
-from tox_poetry_installer.hooks import tox_addoption
-from tox_poetry_installer.hooks import tox_testenv_install_deps
+from tox_poetry_installer.hooks import tox_add_env_config
+from tox_poetry_installer.hooks import tox_add_option
+from tox_poetry_installer.hooks import tox_on_install

tox_poetry_installer/constants.py

@@ -5,6 +5,7 @@ in this module.
 
 All constants should be type hinted.
 """
+
 from typing import Tuple
 
 from tox_poetry_installer import __about__
@@ -16,4 +17,7 @@ PEP508_VERSION_DELIMITERS: Tuple[str, ...] = ("~=", "==", "!=", ">", "<")
 
 # Prefix all reporter messages should include to indicate that they came from this module in the
 # console output.
-REPORTER_PREFIX = f"[{__about__.__title__}]:"
+REPORTER_PREFIX: str = f"{__about__.__title__}:"
+
+# Number of threads to use for installing dependencies by default
+DEFAULT_INSTALL_THREADS: int = 10

tox_poetry_installer/datatypes.py

@@ -1,8 +0,0 @@
-"""Definitions for typehints/containers used by the plugin"""
-from typing import Dict
-
-from poetry.core.packages import Package as PoetryPackage
-
-
-# Map of package names to the package object
-PackageMap = Dict[str, PoetryPackage]

tox_poetry_installer/exceptions.py

@@ -6,10 +6,12 @@ All exceptions should inherit from the common base exception :exc:`ToxPoetryInst
 
   ToxPoetryInstallerException
    +-- SkipEnvironment
+   |    +-- PoetryNotInstalledError
    +-- LockedDepVersionConflictError
    +-- LockedDepNotFoundError
    +-- ExtraNotFoundError
    +-- LockedDepsRequiredError
+   +-- LockfileParsingError
 
 """
 
@@ -22,6 +24,10 @@ class SkipEnvironment(ToxPoetryInstallerException):
     """Current environment does not meet preconditions and should be skipped by the plugin"""
 
 
+class PoetryNotInstalledError(SkipEnvironment):
+    """No version of Poetry could be imported from the current Python environment"""
+
+
 class LockedDepVersionConflictError(ToxPoetryInstallerException):
     """Locked dependencies cannot specify an alternate version for installation"""
 
@@ -36,3 +42,7 @@ class ExtraNotFoundError(ToxPoetryInstallerException):
 
 class LockedDepsRequiredError(ToxPoetryInstallerException):
     """Environment cannot specify unlocked dependencies when locked dependencies are required"""
+
+
+class LockfileParsingError(ToxPoetryInstallerException):
+    """Failed to load or parse the Poetry lockfile"""

tox_poetry_installer/hooks.py

@@ -1,165 +0,0 @@
-"""Main hook definition module
-
-All implementations of tox hooks are defined here, as well as any single-use helper functions
-specifically related to implementing the hooks (to keep the size/readability of the hook functions
-themselves manageable).
-"""
-from typing import List
-from typing import Optional
-
-from poetry.core.packages import Package as PoetryPackage
-from poetry.poetry import Poetry
-from tox import hookimpl
-from tox import reporter
-from tox.action import Action as ToxAction
-from tox.config import Parser as ToxParser
-from tox.venv import VirtualEnv as ToxVirtualEnv
-
-from tox_poetry_installer import constants
-from tox_poetry_installer import exceptions
-from tox_poetry_installer import utilities
-from tox_poetry_installer.datatypes import PackageMap
-
-
-@hookimpl
-def tox_addoption(parser: ToxParser):
-    """Add required configuration options to the tox INI file
-
-    Adds the ``require_locked_deps`` configuration option to the venv to check whether all
-    dependencies should be treated as locked or not.
-    """
-
-    parser.add_testenv_attribute(
-        name="install_dev_deps",
-        type="bool",
-        default=False,
-        help="Automatically install all Poetry development dependencies to the environment",
-    )
-
-    parser.add_testenv_attribute(
-        name="require_locked_deps",
-        type="bool",
-        default=False,
-        help="Require all dependencies in the environment be installed using the Poetry lockfile",
-    )
-
-    parser.add_testenv_attribute(
-        name="locked_deps",
-        type="line-list",
-        help="List of locked dependencies to install to the environment using the Poetry lockfile",
-    )
-
-
-@hookimpl
-def tox_testenv_install_deps(venv: ToxVirtualEnv, action: ToxAction) -> Optional[bool]:
-    """Install the dependencies for the current environment
-
-    Loads the local Poetry environment and the corresponding lockfile then pulls the dependencies
-    specified by the Tox environment. Finally these dependencies are installed into the Tox
-    environment using the Poetry ``PipInstaller`` backend.
-
-    :param venv: Tox virtual environment object with configuration for the local Tox environment.
-    :param action: Tox action object
-    """
-
-    try:
-        poetry = utilities.check_preconditions(venv, action)
-    except exceptions.SkipEnvironment as err:
-        reporter.verbosity1(str(err))
-        return None
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Loaded project pyproject.toml from {poetry.file}"
-    )
-
-    if venv.envconfig.require_locked_deps and venv.envconfig.deps:
-        raise exceptions.LockedDepsRequiredError(
-            f"Unlocked dependencies '{venv.envconfig.deps}' specified for environment '{venv.name}' which requires locked dependencies"
-        )
-
-    package_map: PackageMap = {
-        package.name: package
-        for package in poetry.locker.locked_repository(True).packages
-    }
-
-    if venv.envconfig.install_dev_deps:
-        dev_deps: List[PoetryPackage] = [
-            dep
-            for dep in package_map.values()
-            if dep not in poetry.locker.locked_repository(False).packages
-        ]
-    else:
-        dev_deps = []
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Identified {len(dev_deps)} development dependencies to install to env"
-    )
-
-    try:
-        env_deps: List[PoetryPackage] = []
-        for dep in venv.envconfig.locked_deps:
-            env_deps += utilities.find_transients(package_map, dep.lower())
-        reporter.verbosity1(
-            f"{constants.REPORTER_PREFIX} Identified {len(env_deps)} environment dependencies to install to env"
-        )
-
-        if not venv.envconfig.skip_install and not venv.envconfig.config.skipsdist:
-            project_deps: List[PoetryPackage] = _find_project_dependencies(
-                venv, poetry, package_map
-            )
-        else:
-            project_deps = []
-            reporter.verbosity1(
-                f"{constants.REPORTER_PREFIX} Skipping installation of project dependencies, env does not install project package"
-            )
-        reporter.verbosity1(
-            f"{constants.REPORTER_PREFIX} Identified {len(project_deps)} project dependencies to install to env"
-        )
-    except exceptions.ToxPoetryInstallerException as err:
-        venv.status = "lockfile installation failed"
-        reporter.error(f"{constants.REPORTER_PREFIX} {err}")
-        raise err
-
-    dependencies = list(set(dev_deps + env_deps + project_deps))
-    reporter.verbosity0(
-        f"{constants.REPORTER_PREFIX} Installing {len(dependencies)} dependencies to env '{action.name}'"
-    )
-    utilities.install_to_venv(poetry, venv, dependencies)
-
-    return venv.envconfig.require_locked_deps or None
-
-
-def _find_project_dependencies(
-    venv: ToxVirtualEnv, poetry: Poetry, packages: PackageMap
-) -> List[PoetryPackage]:
-    """Install the dependencies of the project package
-
-    Install all primary dependencies of the project package.
-
-    :param venv: Tox virtual environment to install the packages to
-    :param poetry: Poetry object the packages were sourced from
-    :param packages: Mapping of package names to the corresponding package object
-    """
-
-    base_dependencies: List[PoetryPackage] = [
-        packages[item.name]
-        for item in poetry.package.requires
-        if not item.is_optional()
-    ]
-
-    extra_dependencies: List[PoetryPackage] = []
-    for extra in venv.envconfig.extras:
-        try:
-            extra_dependencies += [
-                packages[item.name] for item in poetry.package.extras[extra]
-            ]
-        except KeyError:
-            raise exceptions.ExtraNotFoundError(
-                f"Environment '{venv.name}' specifies project extra '{extra}' which was not found in the lockfile"
-            ) from None
-
-    dependencies: List[PoetryPackage] = []
-    for dep in base_dependencies + extra_dependencies:
-        dependencies += utilities.find_transients(packages, dep.name.lower())
-
-    return dependencies

tox_poetry_installer/hooks/__init__.py

@@ -0,0 +1,4 @@
+# pylint: disable=missing-module-docstring
+from tox_poetry_installer.hooks.tox_add_env_config import tox_add_env_config
+from tox_poetry_installer.hooks.tox_add_option import tox_add_option
+from tox_poetry_installer.hooks.tox_on_install import tox_on_install

tox_poetry_installer/hooks/_tox_on_install_helpers.py

@@ -0,0 +1,366 @@
+"""Helper functions for the :func:`tox_on_install` hook"""
+
+import collections
+import concurrent.futures
+import contextlib
+import datetime
+import pathlib
+from typing import Collection
+from typing import Dict
+from typing import List
+from typing import Sequence
+from typing import Set
+
+import cleo.io.null_io
+import packaging.utils
+import poetry.config.config
+import poetry.core.packages.dependency
+import poetry.core.packages.package
+import poetry.factory
+import poetry.installation.executor
+import poetry.installation.operations.install
+import poetry.poetry
+import poetry.utils.env
+import tox.tox_env.api
+import tox.tox_env.package
+
+from tox_poetry_installer import constants
+from tox_poetry_installer import exceptions
+from tox_poetry_installer import logger
+
+
+PackageMap = Dict[str, List[poetry.core.packages.package.Package]]
+
+
+def check_preconditions(venv: tox.tox_env.api.ToxEnv) -> poetry.poetry.Poetry:
+    """Check that the local project environment meets expectations"""
+
+    # Skip running the plugin for the provisioning environment. The provisioned environment,
+    # for alternative Tox versions and/or the ``requires`` meta dependencies is specially
+    # handled by Tox and is out of scope for this plugin. Since one of the ways to install this
+    # plugin in the first place is via the Tox provisioning environment, it quickly becomes a
+    # chicken-and-egg problem.
+    if isinstance(venv, tox.tox_env.package.PackageToxEnv):
+        raise exceptions.SkipEnvironment(f"Skipping Tox provisioning env '{venv.name}'")
+
+    try:
+        return poetry.factory.Factory().create_poetry(venv.core["tox_root"])
+    # Support running the plugin when the current tox project does not use Poetry for its
+    # environment/dependency management.
+    #
+    # ``RuntimeError`` is dangerous to blindly catch because it can be (and in Poetry's case,
+    # is) raised in many different places for different purposes.
+    except RuntimeError as err:
+        raise exceptions.SkipEnvironment(
+            f"Skipping installation of locked dependencies due to a Poetry error: {err}"
+        ) from None
+
+
+def identify_transients(
+    dep_name: str,
+    packages: PackageMap,
+    venv: poetry.utils.env.VirtualEnv,
+    allow_missing: Sequence[str] = (),
+) -> List[poetry.core.packages.package.Package]:
+    """Using a pool of packages, identify all transient dependencies of a given package name
+
+    :param dep_name: Either the Poetry dependency or the dependency's bare package name to recursively
+                     identify the transient dependencies of
+    :param packages: All packages from the lockfile to use for identifying dependency relationships.
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param allow_missing: Sequence of package names to allow to be missing from the lockfile. Any
+                          packages that are not found in the lockfile but their name appears in this
+                          list will be silently skipped from installation.
+    :returns: List of packages that need to be installed for the requested dependency.
+
+    .. note:: The package corresponding to the dependency specified by the ``dep`` parameter will
+              be included in the returned list of packages.
+    """
+    searched: Set[str] = set()
+
+    def _transients(
+        transient: poetry.core.packages.dependency.Dependency,
+    ) -> List[poetry.core.packages.package.Package]:
+        searched.add(transient.name)
+
+        results: List[poetry.core.packages.package.Package] = []
+        for option in packages[transient.name]:
+            if venv.is_valid_for_marker(option.to_dependency().marker):
+                for requirement in option.requires:
+                    if requirement.name not in searched:
+                        results += _transients(requirement)
+                logger.debug(f"Including {option} for installation")
+                results.append(option)
+                break
+        else:
+            logger.debug(
+                f"Skipping {transient.name}: target python version is {'.'.join([str(item) for item in venv.get_version_info()])} but package requires {transient.marker}"
+            )
+
+        return results
+
+    try:
+        for option in packages[dep_name]:
+            if venv.is_valid_for_marker(option.to_dependency().marker):
+                dep = option.to_dependency()
+                break
+        else:
+            logger.warning(
+                f"Skipping {dep_name}: no locked version found compatible with target python version {'.'.join([str(item) for item in venv.get_version_info()])}"
+            )
+            return []
+
+        return _transients(dep)
+    except KeyError as err:
+        missing = err.args[0]
+
+        if missing in allow_missing:
+            logger.debug(f"Skipping {missing}: package is allowed to be unlocked")
+            return []
+
+        if any(
+            delimiter in missing for delimiter in constants.PEP508_VERSION_DELIMITERS
+        ):
+            raise exceptions.LockedDepVersionConflictError(
+                f"Locked dependency '{missing}' cannot include version specifier"
+            ) from None
+
+        raise exceptions.LockedDepNotFoundError(
+            f"No version of locked dependency '{missing}' found in the project lockfile"
+        ) from None
+
+
+def find_project_deps(
+    packages: PackageMap,
+    venv: poetry.utils.env.VirtualEnv,
+    project: poetry.poetry.Poetry,
+    extras: Sequence[str] = (),
+) -> List[poetry.core.packages.package.Package]:
+    """Find the root project dependencies
+
+    Recursively identify the dependencies of the root project package
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param project: Poetry object for the current project
+    :param extras: Sequence of extra names to include the dependencies of
+    """
+
+    required_dep_names = [
+        item.name for item in project.package.requires if not item.is_optional()
+    ]
+
+    extra_dep_names: List[str] = []
+    for extra in extras:
+        logger.info(f"Processing project extra '{extra}'")
+        try:
+            extra_dep_names += [
+                item.name
+                for item in project.package.extras[
+                    packaging.utils.NormalizedName(extra)
+                ]
+            ]
+        except KeyError:
+            raise exceptions.ExtraNotFoundError(
+                f"Environment specifies project extra '{extra}' which was not found in the lockfile"
+            ) from None
+
+    dependencies: List[poetry.core.packages.package.Package] = []
+    for dep_name in required_dep_names + extra_dep_names:
+        dependencies += identify_transients(
+            dep_name.lower(), packages, venv, allow_missing=[project.package.name]
+        )
+
+    return dedupe_packages(dependencies)
+
+
+def find_additional_deps(
+    packages: PackageMap,
+    venv: poetry.utils.env.VirtualEnv,
+    project: poetry.poetry.Poetry,
+    dep_names: Sequence[str],
+) -> List[poetry.core.packages.package.Package]:
+    """Find additional dependencies
+
+    Recursively identify the dependencies of an arbitrary list of package names
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param project: Poetry object for the current project
+    :param dep_names: Sequence of additional dependency names to recursively find the transient
+                      dependencies for
+    """
+    dependencies: List[poetry.core.packages.package.Package] = []
+    for dep_name in dep_names:
+        dependencies += identify_transients(
+            dep_name.lower(), packages, venv, allow_missing=[project.package.name]
+        )
+
+    return dedupe_packages(dependencies)
+
+
+def find_group_deps(
+    group: str,
+    packages: PackageMap,
+    venv: poetry.utils.env.VirtualEnv,
+    project: poetry.poetry.Poetry,
+) -> List[poetry.core.packages.package.Package]:
+    """Find the dependencies belonging to a dependency group
+
+    Recursively identify the Poetry dev dependencies
+
+    :param group: Name of the dependency group from the project's ``pyproject.toml``
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param project: Poetry object for the current project
+    """
+    return find_additional_deps(
+        packages,
+        venv,
+        project,
+        # the type ignore here is due to the difficulties around getting nested data
+        # from the inherrently unstructured toml structure (which necessarily is flexibly
+        # typed) but in a situation where there is a meta-structure applied to it (i.e. a
+        # pyproject.toml structure).
+        project.pyproject.data["tool"]["poetry"]  # type: ignore
+        .get("group", {})
+        .get(group, {})
+        .get("dependencies", {})
+        .keys(),
+    )
+
+
+def find_dev_deps(
+    packages: PackageMap,
+    venv: poetry.utils.env.VirtualEnv,
+    project: poetry.poetry.Poetry,
+) -> List[poetry.core.packages.package.Package]:
+    """Find the dev dependencies
+
+    Recursively identify the Poetry dev dependencies
+
+    :param packages: Mapping of all locked package names to their corresponding package object
+    :param venv: Poetry virtual environment to use for package compatibility checks
+    :param project: Poetry object for the current project
+    """
+    dev_group_deps = find_group_deps("dev", packages, venv, project)
+
+    # Legacy pyproject.toml poetry format:
+    legacy_dev_group_deps = find_additional_deps(
+        packages,
+        venv,
+        project,
+        # the type ignore here is due to the difficulties around getting nested data
+        # from the inherrently unstructured toml structure (which necessarily is flexibly
+        # typed) but in a situation where there is a meta-structure applied to it (i.e. a
+        # pyproject.toml structure).
+        project.pyproject.data["tool"]["poetry"].get("dev-dependencies", {}).keys(),  # type: ignore
+    )
+
+    # Poetry 1.2 unions these two toml sections.
+    return dedupe_packages(dev_group_deps + legacy_dev_group_deps)
+
+
+@contextlib.contextmanager
+def _optional_parallelize(parallels: int):
+    """A bit of cheat, really
+
+    A context manager that exposes a common interface for the caller that optionally
+    enables/disables the usage of the parallel thread pooler depending on the value of
+    the ``parallels`` parameter.
+    """
+    if parallels > 0:
+        with concurrent.futures.ThreadPoolExecutor(max_workers=parallels) as executor:
+            yield executor.submit
+    else:
+        yield lambda func, arg: func(arg)
+
+
+def install_package(
+    project: poetry.poetry.Poetry,
+    venv: tox.tox_env.api.ToxEnv,
+    packages: Collection[poetry.core.packages.package.Package],
+    parallels: int = 0,
+):
+    """Install a bunch of packages to a virtualenv
+
+    :param project: Poetry object the packages were sourced from
+    :param venv: Tox virtual environment to install the packages to
+    :param packages: List of packages to install to the virtual environment
+    :param parallels: Number of parallel processes to use for installing dependency packages, or
+                      ``None`` to disable parallelization.
+    """
+
+    logger.info(f"Installing {len(packages)} packages to environment at {venv.env_dir}")
+
+    install_executor = poetry.installation.executor.Executor(
+        env=convert_virtualenv(venv),
+        io=cleo.io.null_io.NullIO(),
+        pool=project.pool,
+        config=poetry.config.config.Config(),
+    )
+
+    installed: Set[poetry.core.packages.package.Package] = set()
+
+    def logged_install(dependency: poetry.core.packages.package.Package) -> None:
+        start = datetime.datetime.now()
+        logger.debug(f"Installing {dependency}")
+        install_executor.execute(
+            [poetry.installation.operations.install.Install(package=dependency)]
+        )
+        end = datetime.datetime.now()
+        logger.debug(f"Finished installing {dependency} in {end - start}")
+
+    with _optional_parallelize(parallels) as executor:
+        futures = []
+        for dependency in packages:
+            if dependency not in installed:
+                installed.add(dependency)
+                logger.debug(f"Queuing {dependency}")
+                future = executor(logged_install, dependency)
+                if future is not None:
+                    futures.append(future)
+            else:
+                logger.debug(f"Skipping {dependency}, already installed")
+        logger.debug("Waiting for installs to finish...")
+
+        for future in concurrent.futures.as_completed(futures):
+            # Don't actually care about the return value, just waiting on the
+            # future to ensure any exceptions that were raised in the called
+            # function are propagated.
+            future.result()
+
+
+def dedupe_packages(
+    packages: Sequence[poetry.core.packages.package.Package],
+) -> List[poetry.core.packages.package.Package]:
+    """Deduplicates a sequence of Packages while preserving ordering
+
+    Adapted from StackOverflow: https://stackoverflow.com/a/480227
+    """
+    seen: Set[poetry.core.packages.package.Package] = set()
+    # Make this faster, avoid method lookup below
+    seen_add = seen.add
+    return [item for item in packages if not (item in seen or seen_add(item))]
+
+
+def convert_virtualenv(venv: tox.tox_env.api.ToxEnv) -> poetry.utils.env.VirtualEnv:
+    """Convert a Tox venv to a Poetry venv
+
+    :param venv: Tox ``VirtualEnv`` object representing a tox virtual environment
+    :returns: Poetry ``VirtualEnv`` object representing a poetry virtual environment
+    """
+    return poetry.utils.env.VirtualEnv(path=pathlib.Path(venv.env_dir))
+
+
+def build_package_map(project: poetry.poetry.Poetry) -> PackageMap:
+    """Build the mapping of package names to objects
+
+    :param project: Populated poetry object to load locked packages from
+    :returns: Mapping of package names to Poetry package objects
+    """
+    packages = collections.defaultdict(list)
+    for package in project.locker.locked_repository().packages:
+        packages[str(package.name)].append(package)
+
+    return packages

tox_poetry_installer/hooks/tox_add_env_config.py

@@ -0,0 +1,47 @@
+"""Add required env configuration options to the tox INI file"""
+
+from typing import List
+
+import tox.config.sets
+import tox.plugin
+
+
+# pylint: disable=missing-function-docstring
+@tox.plugin.impl
+def tox_add_env_config(
+    env_conf: tox.config.sets.EnvConfigSet,
+):
+    env_conf.add_config(
+        "poetry_dep_groups",
+        of_type=List[str],
+        default=[],
+        desc="List of Poetry dependency groups to install to the environment",
+    )
+
+    env_conf.add_config(
+        "install_project_deps",
+        of_type=bool,
+        default=True,
+        desc="Automatically install all Poetry primary dependencies to the environment",
+    )
+
+    env_conf.add_config(
+        "require_locked_deps",
+        of_type=bool,
+        default=False,
+        desc="Require all dependencies in the environment be installed using the Poetry lockfile",
+    )
+
+    env_conf.add_config(
+        "require_poetry",
+        of_type=bool,
+        default=False,
+        desc="Trigger a failure if Poetry is not available to Tox",
+    )
+
+    env_conf.add_config(
+        "locked_deps",
+        of_type=List[str],
+        default=[],
+        desc="List of locked dependencies to install to the environment using the Poetry lockfile",
+    )

tox_poetry_installer/hooks/tox_add_option.py

@@ -0,0 +1,18 @@
+"""Add additional command line arguments to tox to configure plugin behavior"""
+
+import tox.config.cli.parser
+import tox.plugin
+
+from tox_poetry_installer import constants
+
+
+# pylint: disable=missing-function-docstring
+@tox.plugin.impl
+def tox_add_option(parser: tox.config.cli.parser.ToxParser):
+    parser.add_argument(
+        "--parallel-install-threads",
+        type=int,
+        dest="parallel_install_threads",
+        default=constants.DEFAULT_INSTALL_THREADS,
+        help="Number of locked dependencies to install simultaneously; set to 0 to disable parallel installation",
+    )

tox_poetry_installer/hooks/tox_on_install.py

@@ -0,0 +1,114 @@
+"""Install the dependencies for the current environment
+
+Loads the local Poetry environment and the corresponding lockfile then pulls the dependencies
+specified by the Tox environment. Finally these dependencies are installed into the Tox
+environment using the Poetry ``PipInstaller`` backend.
+"""
+
+import itertools
+
+import tox.plugin
+import tox.tox_env.api
+
+from tox_poetry_installer import exceptions
+from tox_poetry_installer import logger
+from tox_poetry_installer.hooks._tox_on_install_helpers import build_package_map
+from tox_poetry_installer.hooks._tox_on_install_helpers import check_preconditions
+from tox_poetry_installer.hooks._tox_on_install_helpers import convert_virtualenv
+from tox_poetry_installer.hooks._tox_on_install_helpers import dedupe_packages
+from tox_poetry_installer.hooks._tox_on_install_helpers import find_additional_deps
+from tox_poetry_installer.hooks._tox_on_install_helpers import find_group_deps
+from tox_poetry_installer.hooks._tox_on_install_helpers import find_project_deps
+from tox_poetry_installer.hooks._tox_on_install_helpers import install_package
+
+
+# pylint: disable=missing-function-docstring,unused-argument
+@tox.plugin.impl
+def tox_on_install(tox_env: tox.tox_env.api.ToxEnv, *args) -> None:
+    try:
+        poetry = check_preconditions(tox_env)
+    except exceptions.SkipEnvironment as err:
+        if (
+            isinstance(err, exceptions.PoetryNotInstalledError)
+            and tox_env.conf["require_poetry"]
+        ):
+            logger.error(str(err))
+            raise err
+        logger.info(str(err))
+        return
+
+    logger.info(f"Loaded project pyproject.toml from {poetry.file}")
+
+    virtualenv = convert_virtualenv(tox_env)
+
+    try:
+        if not poetry.locker.is_fresh():
+            logger.warning(
+                f"The Poetry lock file is not up to date with the latest changes in {poetry.file}"
+            )
+    except FileNotFoundError as err:
+        logger.error(f"Could not parse lockfile: {err}")
+        raise exceptions.LockfileParsingError(
+            f"Could not parse lockfile: {err}"
+        ) from err
+
+    try:
+        if tox_env.conf["require_locked_deps"] and tox_env.conf["deps"].lines():
+            raise exceptions.LockedDepsRequiredError(
+                f"Unlocked dependencies '{tox_env.conf['deps']}' specified for environment '{tox_env.name}' which requires locked dependencies"
+            )
+
+        packages = build_package_map(poetry)
+
+        group_deps = dedupe_packages(
+            list(
+                itertools.chain(
+                    *[
+                        find_group_deps(group, packages, virtualenv, poetry)
+                        for group in tox_env.conf["poetry_dep_groups"]
+                    ]
+                )
+            )
+        )
+        logger.info(
+            f"Identified {len(group_deps)} group dependencies to install to env"
+        )
+
+        env_deps = find_additional_deps(
+            packages, virtualenv, poetry, tox_env.conf["locked_deps"]
+        )
+
+        logger.info(
+            f"Identified {len(env_deps)} environment dependencies to install to env"
+        )
+
+        # extras are not set in a testenv if skip_install=true
+        try:
+            extras = tox_env.conf["extras"]
+        except KeyError:
+            extras = []
+
+        if tox_env.conf["install_project_deps"]:
+            project_deps = find_project_deps(packages, virtualenv, poetry, extras)
+            logger.info(
+                f"Identified {len(project_deps)} project dependencies to install to env"
+            )
+        else:
+            project_deps = []
+            logger.info("Env does not install project package dependencies, skipping")
+    except exceptions.ToxPoetryInstallerException as err:
+        logger.error(str(err))
+        raise err
+    except Exception as err:
+        logger.error(f"Internal plugin error: {err}")
+        raise err
+
+    dependencies = dedupe_packages(group_deps + env_deps + project_deps)
+
+    logger.info(f"Installing {len(dependencies)} dependencies from Poetry lock file")
+    install_package(
+        poetry,
+        tox_env,
+        dependencies,
+        tox_env.options.parallel_install_threads,
+    )

tox_poetry_installer/logger.py

@@ -0,0 +1,30 @@
+"""Logging wrappers to reduce duplication elsewhere
+
+Calling ``tox.reporter.something()`` and having to format a string with the prefix
+gets really old fast, but more importantly it also makes the flow of the main code
+more difficult to follow because of the added complexity.
+"""
+
+import logging
+
+from tox_poetry_installer import constants
+
+
+def error(message: str):
+    """Wrapper around :func:`logging.error` that prefixes the reporter prefix onto the message"""
+    logging.error(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def warning(message: str):
+    """Wrapper around :func:`logging.warning`"""
+    logging.warning(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def info(message: str):
+    """Wrapper around :func:`logging.info`"""
+    logging.info(f"{constants.REPORTER_PREFIX} {message}")
+
+
+def debug(message: str):
+    """Wrapper around :func:`logging.debug`"""
+    logging.debug(f"{constants.REPORTER_PREFIX} {message}")

tox_poetry_installer/utilities.py

@@ -1,110 +0,0 @@
-"""Helper utility functions, usually bridging Tox and Poetry functionality"""
-from pathlib import Path
-from typing import Sequence
-from typing import Set
-
-from poetry.core.packages import Package as PoetryPackage
-from poetry.factory import Factory as PoetryFactory
-from poetry.installation.pip_installer import PipInstaller as PoetryPipInstaller
-from poetry.io.null_io import NullIO as PoetryNullIO
-from poetry.poetry import Poetry
-from poetry.puzzle.provider import Provider as PoetryProvider
-from poetry.utils.env import VirtualEnv as PoetryVirtualEnv
-from tox import reporter
-from tox.action import Action as ToxAction
-from tox.venv import VirtualEnv as ToxVirtualEnv
-
-from tox_poetry_installer import constants
-from tox_poetry_installer import exceptions
-from tox_poetry_installer.datatypes import PackageMap
-
-
-def install_to_venv(
-    poetry: Poetry, venv: ToxVirtualEnv, packages: Sequence[PoetryPackage]
-):
-    """Install a bunch of packages to a virtualenv
-
-    :param poetry: Poetry object the packages were sourced from
-    :param venv: Tox virtual environment to install the packages to
-    :param packages: List of packages to install to the virtual environment
-    """
-
-    reporter.verbosity1(
-        f"{constants.REPORTER_PREFIX} Installing {len(packages)} packages to environment at {venv.envconfig.envdir}"
-    )
-
-    installer = PoetryPipInstaller(
-        env=PoetryVirtualEnv(path=Path(venv.envconfig.envdir)),
-        io=PoetryNullIO(),
-        pool=poetry.pool,
-    )
-
-    for dependency in packages:
-        reporter.verbosity1(f"{constants.REPORTER_PREFIX} Installing {dependency}")
-        installer.install(dependency)
-
-
-def find_transients(packages: PackageMap, dependency_name: str) -> Set[PoetryPackage]:
-    """Using a poetry object identify all dependencies of a specific dependency
-
-    :param poetry: Populated poetry object which can be used to build a populated locked
-                   repository object.
-    :param dependency_name: Bare name (without version) of the dependency to fetch the transient
-                            dependencies of.
-    :returns: List of packages that need to be installed for the requested dependency.
-
-    .. note:: The package corresponding to the dependency named by ``dependency_name`` is included
-              in the list of returned packages.
-    """
-
-    try:
-
-        def find_deps_of_deps(name: str, transients: PackageMap):
-            if name in PoetryProvider.UNSAFE_PACKAGES:
-                reporter.warning(
-                    f"{constants.REPORTER_PREFIX} Installing package '{name}' using Poetry is not supported; skipping installation of package '{name}'"
-                )
-            else:
-                transients[name] = packages[name]
-                for dep in packages[name].requires:
-                    if dep.name not in transients.keys():
-                        find_deps_of_deps(dep.name, transients)
-
-        transients: PackageMap = {}
-        find_deps_of_deps(packages[dependency_name].name, transients)
-
-        return set(transients.values())
-    except KeyError:
-        if any(
-            delimiter in dependency_name
-            for delimiter in constants.PEP508_VERSION_DELIMITERS
-        ):
-            raise exceptions.LockedDepVersionConflictError(
-                f"Locked dependency '{dependency_name}' cannot include version specifier"
-            ) from None
-        raise exceptions.LockedDepNotFoundError(
-            f"No version of locked dependency '{dependency_name}' found in the project lockfile"
-        ) from None
-
-
-def check_preconditions(venv: ToxVirtualEnv, action: ToxAction) -> Poetry:
-    """Check that the local project environment meets expectations"""
-    # Skip running the plugin for the packaging environment. PEP-517 front ends can handle
-    # that better than we can, so let them do their thing. More to the point: if you're having
-    # problems in the packaging env that this plugin would solve, god help you.
-    if action.name == venv.envconfig.config.isolated_build_env:
-        raise exceptions.SkipEnvironment(
-            f"Skipping isolated packaging build env '{action.name}'"
-        )
-
-    try:
-        return PoetryFactory().create_poetry(venv.envconfig.config.toxinidir)
-    # Support running the plugin when the current tox project does not use Poetry for its
-    # environment/dependency management.
-    #
-    # ``RuntimeError`` is dangerous to blindly catch because it can be (and in Poetry's case,
-    # is) raised in many different places for different purposes.
-    except RuntimeError:
-        raise exceptions.SkipEnvironment(
-            "Project does not use Poetry for env management, skipping installation of locked dependencies"
-        ) from None