chore: support prek

README.md

@@ -19,6 +19,7 @@ PDM and Poetry plugin to sync your pre-commit versions with your lockfile and au
 - ⏩ Run every time you run the lockfile is updated, not as a pre-commit hook
 - 🔄 Install pre-commit hooks automatically, no need to run `pre-commit install` manually
 - 💫 Preserve your pre-commit config file formatting
+- ✨ Support [prek](https://prek.j178.dev/) configuration files (preserve `prek` specific keys)
 - 🍃 Lightweight, only depends on [strictyaml](https://pypi.org/project/strictyaml/) and [packaging](https://pypi.org/project/packaging/)
 
 ## Supported versions
@@ -87,6 +88,7 @@ disable-sync-from-lock = false
 # Packages to ignore when syncing from lock
 ignore = []
 # Name of the pre-commit config file to sync with
+# Can be set to ".pre-commit-config.yml" to support prek alternate config file
 pre-commit-config-file = ".pre-commit-config.yaml"
 # Additional mapping of URLs to python packages
 # Default is empty, but will merge with the default mapping

tests/test_pre_commit_config_file.py

@@ -190,3 +190,46 @@ def test_update_additional_dependencies_versions(base: str) -> None:
 def test_precommit_repo_equality(repo1: PreCommitRepo, repo2: PreCommitRepo, equal: bool):
     assert (repo1 == repo2) is equal
     assert (hash(repo1) == hash(repo2)) is equal
+
+
+def test_prek_config_support() -> None:
+    # A config file with prek-specific keys
+    file_content = """\
+minimum_prek_version: "0.1.0"
+orphan: true
+repos:
+  - repo: https://github.com/psf/black
+    rev: 23.3.0
+    hooks:
+      - id: black
+        priority: 10
+        env:
+            FOO: bar
+"""
+    mock_path = MagicMock(spec=Path)
+    mock_path.open = mock_open(read_data=file_content)
+
+    config = PreCommitHookConfig.from_yaml_file(mock_path)
+
+    updated_repo = PreCommitRepo(
+        "https://github.com/psf/black",
+        "23.4.0",
+        [PreCommitHook("black")],
+    )
+
+    mock_path.open = mock_open()
+    config.update_pre_commit_repo_versions({config.repos[0]: updated_repo})
+
+    expected_content = """\
+minimum_prek_version: "0.1.0"
+orphan: true
+repos:
+  - repo: https://github.com/psf/black
+    rev: 23.4.0
+    hooks:
+      - id: black
+        priority: 10
+        env:
+            FOO: bar
+"""
+    mock_path.open().writelines.assert_called_once_with(expected_content.splitlines(keepends=True))