ci: update github action to use pre-commit hook.

.github/workflows/geochemistrypy.yml

@@ -1,6 +1,3 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
 name: Python package
 
 on:
@@ -28,13 +25,17 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Lint with flake8
+        python -m pip install pre-commit
+        if [ -f requirements/production.txt ]; then pip install -r requirements.txt; fi
+    - name: Run pre-commit hooks
       run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --ignore=F811,W605 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=20 --max-line-length=200 --statistics
+        pre-commit run --all-files
+    # - name: Lint with flake8
+    #   run: |
+    #     # stop the build if there are Python syntax errors or undefined names
+    #     flake8 . --count --ignore=F811,W605 --show-source --statistics
+    #     # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+    #     flake8 . --count --exit-zero --max-complexity=20 --max-line-length=200 --statistics
     # - name: Test with pytest
       # run: |
         # pytest