STYLE make black local hook run twice as fast (#49947)

* make black local hook

* remove old hook

Co-authored-by: MarcoGorelli <>

Author: MarcoGorelli

.github/workflows/code-checks.yml

@@ -36,6 +36,8 @@ jobs:
 
     - name: Run pre-commit
       uses: pre-commit/[email protected]
+      with:
+        extra_args: --verbose --all-files
 
   docstring_typing_pylint:
     name: Docstring validation, typing, and pylint
@@ -93,7 +95,7 @@ jobs:
     - name: Typing + pylint
       uses: pre-commit/[email protected]
       with:
-        extra_args: --hook-stage manual --all-files
+        extra_args: --verbose --hook-stage manual --all-files
       if: ${{ steps.build.outcome == 'success' && always() }}
 
     - name: Run docstring validation script tests

.pre-commit-config.yaml

@@ -17,10 +17,6 @@ repos:
         entry: python scripts/run_vulture.py
         pass_filenames: true
         require_serial: false
--   repo: https://github.com/python/black
-    rev: 22.10.0
-    hooks:
-    -   id: black
 -   repo: https://github.com/codespell-project/codespell
     rev: v2.2.2
     hooks:
@@ -114,6 +110,16 @@ repos:
         additional_dependencies: *flake8_dependencies
 -   repo: local
     hooks:
+    # NOTE: we make `black` a local hook because if it's installed from
+    # PyPI (rather than from source) then it'll run twice as fast thanks to mypyc
+    -   id: black
+        name: black
+        description: "Black: The uncompromising Python code formatter"
+        entry: black
+        language: python
+        require_serial: true
+        types_or: [python, pyi]
+        additional_dependencies: [black==22.10.0]
     -   id: pyright
         # note: assumes python env is setup and activated
         name: pyright

environment.yml

@@ -85,7 +85,7 @@ dependencies:
   - cxx-compiler
 
   # code checks
-  - black=22.3.0
+  - black=22.10.0
   - cpplint
   - flake8=6.0.0
   - flake8-bugbear=22.7.1 # used by flake8, find likely bugs

requirements-dev.txt

@@ -62,7 +62,7 @@ py
 moto
 flask
 asv
-black==22.3.0
+black==22.10.0
 cpplint
 flake8==6.0.0
 flake8-bugbear==22.7.1