Optimise fortran linting workflow using uv

.github/workflows/fortran-lint.yaml

@@ -24,35 +24,44 @@ on:
         type: string
         default: "3.14"
 
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
-  fortitude-linting:
+  fortran-linting:
     name: Fortran lint
     runs-on: ${{ inputs.runner }}
     timeout-minutes: ${{ inputs.timeout }}
+
+    env:
+      UV_CACHE_DIR: /tmp/.uv_cache
+      UV_PYTHON: ${{ inputs.python-version }}
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5
 
-      - name: Set up Python
-        uses: actions/setup-python@v6
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v7
         with:
-          python-version: ${{ inputs.python-version }}
+          python-version: ${{ env.UV_PYTHON }}
+          enable-cache: true
 
-      - name: Cache pip packages
+      - name: restore uv cache
         uses: actions/cache@v4
         with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ inputs.python-version }}
+          path: ${{ env.UV_CACHE_DIR }}
+          key: ${{ runner.os }}-${{ hashFiles('uv.lock') }}fortitude-0.7.3
           restore-keys: |
-            ${{ runner.os }}-pip-
+            uv-${{ runner.os }}-${{ hashFiles('uv.lock') }}
+            uv-${{ runner.os }}
 
-      - name: minimize pip cache
-        run: python -m pip cache purge || true
-
-      - name: Install Fortitude Linter
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install fortitude-lint==0.7.3
+      - name: Generate uv environment
+        run: uv init && uv add fortitude-lint==0.7.3
 
       - name: Run Fortitude Linter
-        run: fortitude check --respect-gitignore --show-fixes --file-extensions=f90,F90,x90,X90 .
+        run: uv run fortitude check --respect-gitignore --show-fixes --file-extensions=f90,F90,x90,X90 .
+
+      - name: minimize uv cache
+        run: uv cache prune --ci