Split testing workflow in two stages (#30)

Author: awvwgk

.github/workflows/test.yml

@@ -10,8 +10,34 @@ permissions:
   contents: read
 
 jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Setup micromamba
+      uses: mamba-org/setup-micromamba@v1
+      with:
+        environment-file: environment-cpu.yml
+        environment-name: skala
+        cache-environment: true
+        cache-downloads: true
+
+    - name: Install package in development mode
+      run: |
+        pip install -e . --no-deps
+      shell: micromamba-shell {0}
+
+    - name: Run pre-commit hooks
+      run: |
+        pre-commit install
+        pre-commit run --all-files
+      shell: micromamba-shell {0}
+
   test:
     runs-on: ubuntu-latest
+    needs:
+      - pre-commit
     strategy:
       fail-fast: false
       matrix:
@@ -41,17 +67,6 @@ jobs:
         pip install -e . --no-deps
       shell: micromamba-shell {0}
 
-    - name: Check environment consistency
-      run: |
-        pip check
-      shell: micromamba-shell {0}
-
-    - name: Run pre-commit hooks
-      run: |
-        pre-commit install
-        pre-commit run --all-files
-      shell: micromamba-shell {0}
-
     - name: Run tests with coverage
       run: >-
         pytest