simpler ci

Author: jbellerb

.github/workflows/checks.yml

@@ -16,11 +16,8 @@ jobs:
     name: Run all checks
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
       - name: Install Nix
         uses: cachix/install-nix-action@v31
 
       - name: Evaluate Nix checks
-        run: nix flake check
+        run: nix flake check "github:${GITHUB_REPOSITORY}/${GITHUB_SHA}"