.pylintrc

@@ -11,6 +11,7 @@
 # --disable=W"
 disable=logging-fstring-interpolation
         ,logging-format-interpolation
+        ,bad-continuation
         ,line-too-long
         ,ungrouped-imports
         ,typecheck

poetry.lock

@@ -164,13 +164,13 @@ redis = ["redis (>=2.10.5)"]
 
 [[package]]
 name = "cachetools"
-version = "5.5.0"
+version = "5.4.0"
 description = "Extensible memoizing collections and decorators"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "cachetools-5.5.0-py3-none-any.whl", hash = "sha256:02134e8439cdc2ffb62023ce1debca2944c3f289d66bb17ead3ab3dede74b292"},
+    {file = "cachetools-5.4.0-py3-none-any.whl", hash = "sha256:3ae3b49a3d5e28a77a0be2b37dbcb89005058959cb2323858c2657c4a8cab474"},
-    {file = "cachetools-5.5.0.tar.gz", hash = "sha256:2cc24fb4cbe39633fb7badd9db9ca6295d766d9c2995f245725a46715d050f2a"},
+    {file = "cachetools-5.4.0.tar.gz", hash = "sha256:b8adc2e7c07f105ced7bc56dbb6dfbe7c4a00acce20e2227b3f355be89bc6827"},
 ]
 
 [[package]]
@@ -780,13 +780,13 @@ files = [
 
 [[package]]
 name = "importlib-metadata"
-version = "8.3.0"
+version = "8.2.0"
 description = "Read metadata from Python packages"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "importlib_metadata-8.3.0-py3-none-any.whl", hash = "sha256:42817a4a0be5845d22c6e212db66a94ad261e2318d80b3e0d363894a79df2b67"},
+    {file = "importlib_metadata-8.2.0-py3-none-any.whl", hash = "sha256:11901fa0c2f97919b288679932bb64febaeacf289d18ac84dd68cb2e74213369"},
-    {file = "importlib_metadata-8.3.0.tar.gz", hash = "sha256:9c8fa6e8ea0f9516ad5c8db9246a731c948193c7754d3babb0114a05b27dd364"},
+    {file = "importlib_metadata-8.2.0.tar.gz", hash = "sha256:72e8d4399996132204f9a16dcc751af254a48f8d1b20b9ff0f98d4a8f901e73d"},
 ]
 
 [package.dependencies]
@@ -799,13 +799,13 @@ test = ["flufl.flake8", "importlib-resources (>=1.3)", "jaraco.test (>=5.4)", "p
 
 [[package]]
 name = "importlib-resources"
-version = "6.4.3"
+version = "6.4.2"
 description = "Read resources from Python packages"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "importlib_resources-6.4.3-py3-none-any.whl", hash = "sha256:2d6dfe3b9e055f72495c2085890837fc8c758984e209115c8792bddcb762cd93"},
+    {file = "importlib_resources-6.4.2-py3-none-any.whl", hash = "sha256:8bba8c54a8a3afaa1419910845fa26ebd706dc716dd208d9b158b4b6966f5c5c"},
-    {file = "importlib_resources-6.4.3.tar.gz", hash = "sha256:4a202b9b9d38563b46da59221d77bb73862ab5d79d461307bcb826d725448b98"},
+    {file = "importlib_resources-6.4.2.tar.gz", hash = "sha256:6cbfbefc449cc6e2095dd184691b7a12a04f40bc75dd4c55d31c34f174cdf57a"},
 ]
 
 [package.dependencies]
@@ -1192,50 +1192,41 @@ files = [
 
 [[package]]
 name = "mypy"
-version = "1.11.1"
+version = "0.930"
 description = "Optional static typing for Python"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.6"
 files = [
-    {file = "mypy-1.11.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:a32fc80b63de4b5b3e65f4be82b4cfa362a46702672aa6a0f443b4689af7008c"},
+    {file = "mypy-0.930-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:221cc94dc6a801ccc2be7c0c9fd791c5e08d1fa2c5e1c12dec4eab15b2469871"},
-    {file = "mypy-1.11.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:c1952f5ea8a5a959b05ed5f16452fddadbaae48b5d39235ab4c3fc444d5fd411"},
+    {file = "mypy-0.930-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:db3a87376a1380f396d465bed462e76ea89f838f4c5e967d68ff6ee34b785c31"},
-    {file = "mypy-1.11.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:e1e30dc3bfa4e157e53c1d17a0dad20f89dc433393e7702b813c10e200843b03"},
+    {file = "mypy-0.930-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:1d2296f35aae9802eeb1327058b550371ee382d71374b3e7d2804035ef0b830b"},
-    {file = "mypy-1.11.1-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:2c63350af88f43a66d3dfeeeb8d77af34a4f07d760b9eb3a8697f0386c7590b4"},
+    {file = "mypy-0.930-cp310-cp310-win_amd64.whl", hash = "sha256:959319b9a3cafc33a8185f440a433ba520239c72e733bf91f9efd67b0a8e9b30"},
-    {file = "mypy-1.11.1-cp310-cp310-win_amd64.whl", hash = "sha256:a831671bad47186603872a3abc19634f3011d7f83b083762c942442d51c58d58"},
+    {file = "mypy-0.930-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:45a4dc21c789cfd09b8ccafe114d6de66f0b341ad761338de717192f19397a8c"},
-    {file = "mypy-1.11.1-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:7b6343d338390bb946d449677726edf60102a1c96079b4f002dedff375953fc5"},
+    {file = "mypy-0.930-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:1e689e92cdebd87607a041585f1dc7339aa2e8a9f9bad9ba7e6ece619431b20c"},
-    {file = "mypy-1.11.1-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:e4fe9f4e5e521b458d8feb52547f4bade7ef8c93238dfb5bbc790d9ff2d770ca"},
+    {file = "mypy-0.930-cp36-cp36m-win_amd64.whl", hash = "sha256:ed4e0ea066bb12f56b2812a15ff223c57c0a44eca817ceb96b214bb055c7051f"},
-    {file = "mypy-1.11.1-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:886c9dbecc87b9516eff294541bf7f3655722bf22bb898ee06985cd7269898de"},
+    {file = "mypy-0.930-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:a9d8dffefba634b27d650e0de2564379a1a367e2e08d6617d8f89261a3bf63b2"},
-    {file = "mypy-1.11.1-cp311-cp311-musllinux_1_1_x86_64.whl", hash = "sha256:fca4a60e1dd9fd0193ae0067eaeeb962f2d79e0d9f0f66223a0682f26ffcc809"},
+    {file = "mypy-0.930-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:b419e9721260161e70d054a15abbd50603c16f159860cfd0daeab647d828fc29"},
-    {file = "mypy-1.11.1-cp311-cp311-win_amd64.whl", hash = "sha256:0bd53faf56de9643336aeea1c925012837432b5faf1701ccca7fde70166ccf72"},
+    {file = "mypy-0.930-cp37-cp37m-win_amd64.whl", hash = "sha256:601f46593f627f8a9b944f74fd387c9b5f4266b39abad77471947069c2fc7651"},
-    {file = "mypy-1.11.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:f39918a50f74dc5969807dcfaecafa804fa7f90c9d60506835036cc1bc891dc8"},
+    {file = "mypy-0.930-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:1ea7199780c1d7940b82dbc0a4e37722b4e3851264dbba81e01abecc9052d8a7"},
-    {file = "mypy-1.11.1-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:0bc71d1fb27a428139dd78621953effe0d208aed9857cb08d002280b0422003a"},
+    {file = "mypy-0.930-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:70b197dd8c78fc5d2daf84bd093e8466a2b2e007eedaa85e792e513a820adbf7"},
-    {file = "mypy-1.11.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:b868d3bcff720dd7217c383474008ddabaf048fad8d78ed948bb4b624870a417"},
+    {file = "mypy-0.930-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:5feb56f8bb280468fe5fc8e6f56f48f99aa0df9eed3c507a11505ee4657b5380"},
-    {file = "mypy-1.11.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:a707ec1527ffcdd1c784d0924bf5cb15cd7f22683b919668a04d2b9c34549d2e"},
+    {file = "mypy-0.930-cp38-cp38-win_amd64.whl", hash = "sha256:2e9c5409e9cb81049bb03fa1009b573dea87976713e3898561567a86c4eaee01"},
-    {file = "mypy-1.11.1-cp312-cp312-win_amd64.whl", hash = "sha256:64f4a90e3ea07f590c5bcf9029035cf0efeae5ba8be511a8caada1a4893f5525"},
+    {file = "mypy-0.930-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:554873e45c1ca20f31ddf873deb67fa5d2e87b76b97db50669f0468ccded8fae"},
-    {file = "mypy-1.11.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:749fd3213916f1751fff995fccf20c6195cae941dc968f3aaadf9bb4e430e5a2"},
+    {file = "mypy-0.930-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:0feb82e9fa849affca7edd24713dbe809dce780ced9f3feca5ed3d80e40b777f"},
-    {file = "mypy-1.11.1-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:b639dce63a0b19085213ec5fdd8cffd1d81988f47a2dec7100e93564f3e8fb3b"},
+    {file = "mypy-0.930-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:bc1a0607ea03c30225347334af66b0af12eefba018a89a88c209e02b7065ea95"},
-    {file = "mypy-1.11.1-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:4c956b49c5d865394d62941b109728c5c596a415e9c5b2be663dd26a1ff07bc0"},
+    {file = "mypy-0.930-cp39-cp39-win_amd64.whl", hash = "sha256:f9f665d69034b1fcfdbcd4197480d26298bbfb5d2dfe206245b6498addb34999"},
-    {file = "mypy-1.11.1-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:45df906e8b6804ef4b666af29a87ad9f5921aad091c79cc38e12198e220beabd"},
+    {file = "mypy-0.930-py3-none-any.whl", hash = "sha256:bf4a44e03040206f7c058d1f5ba02ef2d1820720c88bc4285c7d9a4269f54173"},
-    {file = "mypy-1.11.1-cp38-cp38-win_amd64.whl", hash = "sha256:d44be7551689d9d47b7abc27c71257adfdb53f03880841a5db15ddb22dc63edb"},
+    {file = "mypy-0.930.tar.gz", hash = "sha256:51426262ae4714cc7dd5439814676e0992b55bcc0f6514eccb4cf8e0678962c2"},
-    {file = "mypy-1.11.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:2684d3f693073ab89d76da8e3921883019ea8a3ec20fa5d8ecca6a2db4c54bbe"},
-    {file = "mypy-1.11.1-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:79c07eb282cb457473add5052b63925e5cc97dfab9812ee65a7c7ab5e3cb551c"},
-    {file = "mypy-1.11.1-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:11965c2f571ded6239977b14deebd3f4c3abd9a92398712d6da3a772974fad69"},
-    {file = "mypy-1.11.1-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:a2b43895a0f8154df6519706d9bca8280cda52d3d9d1514b2d9c3e26792a0b74"},
-    {file = "mypy-1.11.1-cp39-cp39-win_amd64.whl", hash = "sha256:1a81cf05975fd61aec5ae16501a091cfb9f605dc3e3c878c0da32f250b74760b"},
-    {file = "mypy-1.11.1-py3-none-any.whl", hash = "sha256:0624bdb940255d2dd24e829d99a13cfeb72e4e9031f9492148f410ed30bcab54"},
-    {file = "mypy-1.11.1.tar.gz", hash = "sha256:f404a0b069709f18bbdb702eb3dcfe51910602995de00bd39cea3050b5772d08"},
 ]
 
 [package.dependencies]
-mypy-extensions = ">=1.0.0"
+mypy-extensions = ">=0.4.3"
-tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
+tomli = ">=1.1.0"
-typing-extensions = ">=4.6.0"
+typing-extensions = ">=3.10"
 
 [package.extras]
 dmypy = ["psutil (>=4.0)"]
-install-types = ["pip"]
+python2 = ["typed-ast (>=1.4.0,<2)"]
-mypyc = ["setuptools (>=50)"]
-reports = ["lxml"]
 
 [[package]]
 name = "mypy-extensions"
@@ -2279,4 +2270,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "5db0c01a710f54d0e31cbfd93f1b7ed2c445581c214c9dcff12370db3e47df3d"
+content-hash = "19b76bbf7fcd66676f2d95fd8b7969bc5abfec4ed70b6237f8f4606089b74d5c"

pyproject.toml

@@ -49,7 +49,7 @@ 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"}
+mypy = {version = "^0.930", 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"}

tests/fixtures.py

@@ -5,10 +5,10 @@ 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
+from poetry.installation.operations.operation import Operation
 
 import tox_poetry_installer.hooks._tox_on_install_helpers
 
@@ -40,9 +40,7 @@ class MockExecutor:
     def __init__(self, env: MockVirtualEnv, **kwargs):
         self.env = env
 
-    def execute(
+    def execute(self, operations: List[Operation]):
-        self, operations: List[poetry.installation.operations.operation.Operation]
-    ):
         self.env.installed.extend([operation.package for operation in operations])
         time.sleep(1)
 
@@ -63,9 +61,9 @@ def mock_venv(monkeypatch):
 
 @pytest.fixture(scope="function")
 def mock_poetry_factory(monkeypatch):
-    project = poetry.factory.Factory().create_poetry(cwd=TEST_PROJECT_PATH)
+    pypoetry = poetry.factory.Factory().create_poetry(cwd=TEST_PROJECT_PATH)
 
     def mock_factory(*args, **kwargs):
-        return project
+        return pypoetry
 
     monkeypatch.setattr(poetry.factory.Factory, "create_poetry", mock_factory)

tests/test_installer.py

@@ -2,10 +2,9 @@
 import time
 from unittest import mock
 
-import poetry.factory
-import poetry.installation.executor
 import pytest
 import tox.tox_env.python.virtual_env.runner
+from poetry.factory import Factory
 
 import tox_poetry_installer.hooks._tox_on_install_helpers
 
@@ -15,16 +14,16 @@ 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)
+    poetry = 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
+        item.name: item for item in poetry.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
+        poetry, venv, to_install
     )
 
     assert len(set(to_install)) == len(venv.installed)  # pylint: disable=no-member
@@ -32,9 +31,9 @@ def test_deduplication(mock_venv, mock_poetry_factory):
 
 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)
+    poetry = 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
+        item.name: item for item in poetry.locker.locked_repository().packages
     }
 
     to_install = [
@@ -49,14 +48,14 @@ def test_parallelization(mock_venv, mock_poetry_factory):
     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
+        poetry, 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
+        poetry, venv_parallel, to_install, 5
     )
     parallel = time.time() - start_parallel
 
@@ -76,22 +75,24 @@ def test_propagates_exceptions_during_installation(
 
     Regression test for https://github.com/enpaul/tox-poetry-installer/issues/86
     """
-    project = poetry.factory.Factory().create_poetry(None)
+    from tox_poetry_installer import _poetry  # pylint: disable=import-outside-toplevel
+
+    poetry = 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
+        item.name: item for item in poetry.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,
+        _poetry,
         "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
+                poetry, venv, to_install, num_threads
             )
 
     assert exc_info.value is fake_exception

tests/test_transients.py

@@ -48,9 +48,9 @@ def test_functional(mock_poetry_factory, mock_venv):
     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)
+    pypoetry = poetry.factory.Factory().create_poetry(None)
     packages = tox_poetry_installer.hooks._tox_on_install_helpers.build_package_map(
-        project
+        pypoetry
     )
     venv = poetry.utils.env.VirtualEnv()  # pylint: disable=no-value-for-parameter
 

tox_poetry_installer/_poetry.py

@@ -0,0 +1,44 @@
+"""You've heard of vendoirization, now get ready for internal namespace shadowing
+
+Poetry is an optional dependency of this package explicitly to support the use case of having the
+plugin and the `poetry` package installed to the same python environment; this is most common in
+containers and/or CI. In this case there are two potential problems that can arise in this case:
+
+* The installation of the plugin overwrites the installed version of Poetry resulting in
+  compatibility issues.
+* Running `poetry install --no-dev`, when this plugin is in the dev-deps, results in poetry being
+  uninstalled from the environment.
+
+To support these edge cases, and more broadly to support not messing with a system package manager,
+the `poetry` package dependency is listed as optional dependency. This allows the plugin to be
+installed to the same environment as Poetry and import that same Poetry installation here.
+
+However, simply importing Poetry on the assumption that it is installed breaks another valid use
+case: having this plugin installed alongside Tox when not using a Poetry-based project. To account
+for this the imports in this module are isolated and the resultant import error that would result
+is converted to an internal error that can be caught by callers. Rather than importing this module
+at the module scope it is imported into function scope wherever Poetry components are needed. This
+moves import errors from load time to runtime which allows the plugin to be skipped if Poetry isn't
+installed and/or a more helpful error be raised within the Tox framework.
+"""
+
+import sys
+
+from tox_poetry_installer import exceptions
+
+
+try:
+    # pylint: disable=import-outside-toplevel,unused-import
+    from cleo.io.null_io import NullIO
+    from poetry.config.config import Config
+    from poetry.core.packages.dependency import Dependency as PoetryDependency
+    from poetry.core.packages.package import Package as PoetryPackage
+    from poetry.factory import Factory
+    from poetry.installation.executor import Executor
+    from poetry.installation.operations.install import Install
+    from poetry.poetry import Poetry
+    from poetry.utils.env import VirtualEnv
+except ImportError as err:
+    raise exceptions.PoetryNotInstalledError(
+        f"Failed to import a supported version of Poetry under the current environment '{sys.executable}': {err}"
+    ) from None

tox_poetry_installer/hooks/_tox_on_install_helpers.py

@@ -3,36 +3,36 @@
 import collections
 import concurrent.futures
 import contextlib
-import datetime
+import typing
-import pathlib
+from datetime import datetime
+from pathlib import Path
 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
+from poetry.core.packages.dependency import Dependency as PoetryDependency
-import packaging.utils
+from poetry.core.packages.package import Package as PoetryPackage
-import poetry.config.config
+from tox.tox_env.api import ToxEnv as ToxVirtualEnv
-import poetry.core.packages.dependency
+from tox.tox_env.package import PackageToxEnv
-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]]
+if typing.TYPE_CHECKING:
+    from tox_poetry_installer import _poetry
+
+# This is globally disabled to support the usage of the _poetry shadow module
+# pylint: disable=import-outside-toplevel
 
 
-def check_preconditions(venv: tox.tox_env.api.ToxEnv) -> poetry.poetry.Poetry:
+PackageMap = Dict[str, List[PoetryPackage]]
+
+
+def check_preconditions(venv: ToxVirtualEnv) -> "_poetry.Poetry":
     """Check that the local project environment meets expectations"""
 
     # Skip running the plugin for the provisioning environment. The provisioned environment,
@@ -40,11 +40,13 @@ def check_preconditions(venv: tox.tox_env.api.ToxEnv) -> poetry.poetry.Poetry:
     # 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):
+    if isinstance(venv, PackageToxEnv):
         raise exceptions.SkipEnvironment(f"Skipping Tox provisioning env '{venv.name}'")
 
+    from tox_poetry_installer import _poetry
+
     try:
-        return poetry.factory.Factory().create_poetry(venv.core["tox_root"])
+        return _poetry.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.
     #
@@ -59,9 +61,9 @@ def check_preconditions(venv: tox.tox_env.api.ToxEnv) -> poetry.poetry.Poetry:
 def identify_transients(
     dep_name: str,
     packages: PackageMap,
-    venv: poetry.utils.env.VirtualEnv,
+    venv: "_poetry.VirtualEnv",
     allow_missing: Sequence[str] = (),
-) -> List[poetry.core.packages.package.Package]:
+) -> List[PoetryPackage]:
     """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
@@ -78,12 +80,10 @@ def identify_transients(
     """
     searched: Set[str] = set()
 
-    def _transients(
+    def _transients(transient: PoetryDependency) -> List[PoetryPackage]:
-        transient: poetry.core.packages.dependency.Dependency,
-    ) -> List[poetry.core.packages.package.Package]:
         searched.add(transient.name)
 
-        results: List[poetry.core.packages.package.Package] = []
+        results: List[PoetryPackage] = []
         for option in packages[transient.name]:
             if venv.is_valid_for_marker(option.to_dependency().marker):
                 for requirement in option.requires:
@@ -132,43 +132,38 @@ def identify_transients(
 
 def find_project_deps(
     packages: PackageMap,
-    venv: poetry.utils.env.VirtualEnv,
+    venv: "_poetry.VirtualEnv",
-    project: poetry.poetry.Poetry,
+    poetry: "_poetry.Poetry",
     extras: Sequence[str] = (),
-) -> List[poetry.core.packages.package.Package]:
+) -> List[PoetryPackage]:
     """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 poetry: 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()
+        item.name for item in poetry.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 += [
+            extra_dep_names += [item.name for item in poetry.package.extras[extra]]
-                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] = []
+    dependencies: List[PoetryPackage] = []
     for dep_name in required_dep_names + extra_dep_names:
         dependencies += identify_transients(
-            dep_name.lower(), packages, venv, allow_missing=[project.package.name]
+            dep_name.lower(), packages, venv, allow_missing=[poetry.package.name]
         )
 
     return dedupe_packages(dependencies)
@@ -176,24 +171,24 @@ def find_project_deps(
 
 def find_additional_deps(
     packages: PackageMap,
-    venv: poetry.utils.env.VirtualEnv,
+    venv: "_poetry.VirtualEnv",
-    project: poetry.poetry.Poetry,
+    poetry: "_poetry.Poetry",
     dep_names: Sequence[str],
-) -> List[poetry.core.packages.package.Package]:
+) -> List[PoetryPackage]:
     """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 poetry: 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] = []
+    dependencies: List[PoetryPackage] = []
     for dep_name in dep_names:
         dependencies += identify_transients(
-            dep_name.lower(), packages, venv, allow_missing=[project.package.name]
+            dep_name.lower(), packages, venv, allow_missing=[poetry.package.name]
         )
 
     return dedupe_packages(dependencies)
@@ -202,9 +197,9 @@ def find_additional_deps(
 def find_group_deps(
     group: str,
     packages: PackageMap,
-    venv: poetry.utils.env.VirtualEnv,
+    venv: "_poetry.VirtualEnv",
-    project: poetry.poetry.Poetry,
+    poetry: "_poetry.Poetry",
-) -> List[poetry.core.packages.package.Package]:
+) -> List[PoetryPackage]:
     """Find the dependencies belonging to a dependency group
 
     Recursively identify the Poetry dev dependencies
@@ -212,17 +207,13 @@ def find_group_deps(
     :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
+    :param poetry: Poetry object for the current project
     """
     return find_additional_deps(
         packages,
         venv,
-        project,
+        poetry,
-        # the type ignore here is due to the difficulties around getting nested data
+        poetry.pyproject.data["tool"]["poetry"]
-        # 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", {})
@@ -231,38 +222,66 @@ def find_group_deps(
 
 
 def find_dev_deps(
-    packages: PackageMap,
+    packages: PackageMap, venv: "_poetry.VirtualEnv", poetry: "_poetry.Poetry"
-    venv: poetry.utils.env.VirtualEnv,
+) -> List[PoetryPackage]:
-    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
+    :param poetry: Poetry object for the current project
     """
-    dev_group_deps = find_group_deps("dev", packages, venv, project)
+    dev_group_deps = find_group_deps("dev", packages, venv, poetry)
 
     # Legacy pyproject.toml poetry format:
     legacy_dev_group_deps = find_additional_deps(
         packages,
         venv,
-        project,
+        poetry,
-        # the type ignore here is due to the difficulties around getting nested data
+        poetry.pyproject.data["tool"]["poetry"].get("dev-dependencies", {}).keys(),
-        # 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 install_package(
-def _optional_parallelize(parallels: int):
+    poetry: "_poetry.Poetry",
+    venv: ToxVirtualEnv,
+    packages: Collection["_poetry.PoetryPackage"],
+    parallels: int = 0,
+):
+    """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
+    :param parallels: Number of parallel processes to use for installing dependency packages, or
+                      ``None`` to disable parallelization.
+    """
+    from tox_poetry_installer import _poetry
+
+    logger.info(f"Installing {len(packages)} packages to environment at {venv.env_dir}")
+
+    install_executor = _poetry.Executor(
+        env=convert_virtualenv(venv),
+        io=_poetry.NullIO(),
+        pool=poetry.pool,
+        config=_poetry.Config(),
+    )
+
+    installed: Set[_poetry.PoetryPackage] = set()
+
+    def logged_install(dependency: _poetry.PoetryPackage) -> None:
+        start = datetime.now()
+        logger.debug(f"Installing {dependency}")
+        install_executor.execute([_poetry.Install(package=dependency)])
+        end = datetime.now()
+        logger.debug(f"Finished installing {dependency} in {end - start}")
+
+    @contextlib.contextmanager
+    def _optional_parallelize():
         """A bit of cheat, really
 
         A context manager that exposes a common interface for the caller that optionally
@@ -270,48 +289,14 @@ def _optional_parallelize(parallels: int):
         the ``parallels`` parameter.
         """
         if parallels > 0:
-        with concurrent.futures.ThreadPoolExecutor(max_workers=parallels) as executor:
+            with concurrent.futures.ThreadPoolExecutor(
+                max_workers=parallels
+            ) as executor:
                 yield executor.submit
         else:
             yield lambda func, arg: func(arg)
 
-
+    with _optional_parallelize() as executor:
-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:
@@ -331,36 +316,36 @@ def install_package(
             future.result()
 
 
-def dedupe_packages(
+def dedupe_packages(packages: Sequence[PoetryPackage]) -> List[PoetryPackage]:
-    packages: Sequence[poetry.core.packages.package.Package],
+    """Deduplicates a sequence of PoetryPackages while preserving ordering
-) -> 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()
+    seen: Set[PoetryPackage] = 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))]
+    return [p for p in packages if not (p in seen or seen_add(p))]
 
 
-def convert_virtualenv(venv: tox.tox_env.api.ToxEnv) -> poetry.utils.env.VirtualEnv:
+def convert_virtualenv(venv: ToxVirtualEnv) -> "_poetry.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))
+    from tox_poetry_installer import _poetry
+
+    return _poetry.VirtualEnv(path=Path(venv.env_dir))
 
 
-def build_package_map(project: poetry.poetry.Poetry) -> PackageMap:
+def build_package_map(poetry: "_poetry.Poetry") -> PackageMap:
     """Build the mapping of package names to objects
 
-    :param project: Populated poetry object to load locked packages from
+    :param poetry: 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:
+    for package in poetry.locker.locked_repository().packages:
-        packages[str(package.name)].append(package)
+        packages[package.name].append(package)
 
     return packages

tox_poetry_installer/hooks/tox_add_env_config.py

@@ -2,14 +2,14 @@
 
 from typing import List
 
-import tox.config.sets
+from tox.config.sets import EnvConfigSet
-import tox.plugin
+from tox.plugin import impl
 
 
 # pylint: disable=missing-function-docstring
-@tox.plugin.impl
+@impl
 def tox_add_env_config(
-    env_conf: tox.config.sets.EnvConfigSet,
+    env_conf: EnvConfigSet,
 ):
     env_conf.add_config(
         "poetry_dep_groups",

tox_poetry_installer/hooks/tox_add_option.py

@@ -1,14 +1,14 @@
 """Add additional command line arguments to tox to configure plugin behavior"""
 
-import tox.config.cli.parser
+from tox.config.cli.parser import ToxParser
-import tox.plugin
+from tox.plugin import impl
 
 from tox_poetry_installer import constants
 
 
 # pylint: disable=missing-function-docstring
-@tox.plugin.impl
+@impl
-def tox_add_option(parser: tox.config.cli.parser.ToxParser):
+def tox_add_option(parser: ToxParser):
     parser.add_argument(
         "--parallel-install-threads",
         type=int,

tox_poetry_installer/hooks/tox_on_install.py

@@ -5,10 +5,10 @@ specified by the Tox environment. Finally these dependencies are installed into
 environment using the Poetry ``PipInstaller`` backend.
 """
 
-import itertools
+from itertools import chain
 
-import tox.plugin
+from tox.plugin import impl
-import tox.tox_env.api
+from tox.tox_env.api import ToxEnv as ToxVirtualEnv
 
 from tox_poetry_installer import exceptions
 from tox_poetry_installer import logger
@@ -23,8 +23,8 @@ from tox_poetry_installer.hooks._tox_on_install_helpers import install_package
 
 
 # pylint: disable=missing-function-docstring,unused-argument
-@tox.plugin.impl
+@impl
-def tox_on_install(tox_env: tox.tox_env.api.ToxEnv, *args) -> None:
+def tox_on_install(tox_env: ToxVirtualEnv, *args) -> None:
     try:
         poetry = check_preconditions(tox_env)
     except exceptions.SkipEnvironment as err:
@@ -62,7 +62,7 @@ def tox_on_install(tox_env: tox.tox_env.api.ToxEnv, *args) -> None:
 
         group_deps = dedupe_packages(
             list(
-                itertools.chain(
+                chain(
                     *[
                         find_group_deps(group, packages, virtualenv, poetry)
                         for group in tox_env.conf["poetry_dep_groups"]