style: enforce commit message format

.pre-commit-config.yaml

@@ -1,6 +1,8 @@
 # .pre-commit-config.yaml
 # see pyproject.toml for tool-specific configs
 
+default_install_hook_types: [pre-commit, commit-msg]
+
 repos:
 # misc pre-commit helpers
 - repo: https://github.com/pre-commit/pre-commit-hooks
@@ -46,3 +48,12 @@ repos:
   hooks:
     - id: sqlfluff-fix
     - id: sqlfluff-lint
+
+# commitlint
+#   (configuration in commitlint.config.js)
+- repo: https://github.com/alessandrojcm/commitlint-pre-commit-hook
+  rev: v9.11.0
+  hooks:
+    - id: commitlint
+      additional_dependencies: ['@commitlint/config-conventional']
+      stages: [commit-msg]

README.md

@@ -100,6 +100,7 @@ The checks contained in this repo include (in the order in which they run):
 * `mypy` is used for static type checking
 * `poetry` checks on valid and aligned pyproject.toml and poetry.lock files
 * `sqlfluff` checks and fixes sql formatting and linting
+* `commitlint` enforces commit message conforms to [conventional commit](https://www.conventionalcommits.org/en/v1.0.0/) format
 
 If you want `ruff format` to ignore a particular section of code, you can add the comments `# fmt: off` and `# fmt: on` before and after the respective block of code (same as you would if using `black`).
 * https://stackoverflow.com/a/58584557

commitlint.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+    extends: [
+        "@commitlint/config-conventional"
+    ],
+}