Update pre-commit config to use locked dependencies in poetry env

.pre-commit-config.yaml

@@ -1,28 +1,48 @@
 ---
+# All of the pre-commit hooks here actually use the `pytyhon` pre-commit language
+# setting. However, for the python language setting, pre-commit will create and manage
+# a cached virtual environment for each hook ID and do a bare `pip install <repo>` into
+# the venv to setup the hook. This can result in conflicting dependency versions between
+# the version installed to the pre-commit venv and the version installed to the Poetry
+# venv specified in the lockfile.
+#
+# The solution is to specify `language: system` for all hooks and then install the
+# required dependencies to the Poetry venv. The `system` language skips the isolated
+# venv creation and looks for the entrypoint specified by the hook in the global
+# environment which, if running in the Poetry venv, will find the entrypoint provided
+# by the Poetry-managed dependency.
+#
 repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.3.0
+    hooks:
+      - id: end-of-file-fixer
+        language: system
+      - id: fix-encoding-pragma
+        args:
+          - "--remove"
+        language: system
+      - id: trailing-whitespace
+        language: system
+      - id: check-merge-conflict
+        language: system
+
   - repo: https://github.com/psf/black
     rev: master
     hooks:
       - id: black
-        language_version: python3.7
+        language: system
 
   - repo: https://github.com/asottile/blacken-docs
-    rev: v0.5.0
-    hooks:
-      - id: blacken-docs
-        additional_dependencies: [black]
-        language_version: python3.7
-
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.0.0
-    hooks:
-      - id: end-of-file-fixer
-      - id: fix-encoding-pragma
-        args: [--remove]
-      - id: trailing-whitespace
-
-  - repo: https://github.com/asottile/reorder_python_imports
     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
-        language_version: python3
+        args:
+          - "--unclassifiable-application-module=imagemonk"
+        language: system

pyproject.toml

@@ -1,8 +1,9 @@
 [tool.poetry]
 name = "imagemonk"
 version = "0.0.0"
+license = "MIT"
+authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
 description = "HTTP server for uploading images and generating thumbnails"
-authors = ["Ethan Paul <e@enp.one>"]
 repository = "https://github.com/mocproject/imagemonk/"
 packages = [{include = "imagemonk"}]
 
@@ -12,18 +13,20 @@ python = "^3.7"
 [tool.poetry.dev-dependencies]
 bandit = "^1.6.2"
 black = { git = "https://github.com/psf/black.git" }
+blacken-docs = "^1.9.1"
 ipython = "^7.10.2"
-mypy = "^0.782"
+mypy = "^0.790"
 pre-commit = "^2.1.1"
-pylint = "^2.4.4"
+pre-commit-hooks = "^3.4.0"
+pylint = "^2.6.0"
 pytest = "^5.2.0"
 pytest-cov = "^2.8.0"
-reorder-python-imports = "^1.8.0"
+reorder-python-imports = "^2.3.0"
 safety = "^1.9.0"
-sphinx = "^3.0.4"
-sphinx-autodoc-typehints = "^1.8.0"
+sphinx = "^3.3.0"
+sphinx-autodoc-typehints = "^1.11.1"
 toml = "^0.10.1"
-tox = "^3.14.0"
+tox = "^3.20.0"
 
 [build-system]
 requires = ["poetry>=1.0.0"]