ci: nix-ify pipeline

.forgejo/workflows/ci.yml

@@ -1,43 +1,34 @@
 name: Continuous Integration
 
 on:
-    push:
-    workflow_dispatch:
+  push:
+  workflow_dispatch:
 
 jobs:
   build-and-lint:
     name: Lint, Check & Test
-    runs-on: ubuntu-latest
+    runs-on: nix
 
     steps:
       - name: Check out Repository
         uses: https://git.konstantinfickel.de/actions/checkout@v4
 
-      - name: Install uv
-        uses: astral-sh/setup-uv@v5
-        with:
-          enable-cache: true
-          version: "0.7.14"
-
-      - name: Set up python
-        uses: actions/setup-python@v5
-        with:
-          python-version-file: "pyproject.toml"
+      - run: nix --version
+      - run: nix flake check
 
       - name: Install the project
-        run: uv sync --locked --all-extras --dev
+        run: nix develop .#impure --command bash -c "uv sync --locked --all-extras --dev"
 
       - name: Test with PyTest
-        run: uv run pytest --junit-xml test-report.xml
-        
+        run: nix develop .#impure --command bash -c "uv run pytest --junit-xml test-report.xml"
+
       - name: Report test results
-        uses: dorny/test-reporter@v2
+        uses: https://github.com/dorny/test-reporter.git@v2
         if: ${{ !cancelled() }}
-        with: 
+        with:
           name: PyTest Results
           path: test-report.xml
           reporter: java-junit
 
       - name: Check with PyRight
-        run: uv run pyright
-
+        run: nix develop .#impure --command bash -c "uv run pyright"