ci(flake): collect nix-flake-show, remove nix-flake-check (nix-github-actions already do this)

.github/workflows/ci.yml

@@ -59,25 +59,6 @@ jobs:
           echo "NIXPKGS_SYSTEM=$(nix eval --raw 'nixpkgs#system')" >> "$GITHUB_ENV"
       - run: nix build -L ".#devShells.${NIXPKGS_SYSTEM}.default" --keep-going
 
-  nix-flake-check:
-    # ensure flake-exposed derivations are correct
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - ubuntu-latest
-          - macos-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v23
-      - uses: cachix/cachix-action@v12
-        with:
-          name: poetry2nix
-          signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
-      - name: check 
-        run: nix flake check
-
   nix-flake-show:
     # ensure flake-exposed endpoints (apps, packages, devShells) are of correct types
     # (something like apps.${SYSTEM}.<app> can be hard to get right)
@@ -95,7 +76,7 @@ jobs:
         with:
           name: poetry2nix
           signingKey: "VhaWuN3IyJVpWg+aZvTocVB+W8ziZKKRGLKR53Pkld3YRZxYOUfXZf0fvqF+LkqVW0eA60trVd5vsqNONpX9Hw=="
-      - run: nix flake show
+      - run: nix flake show --all-systems
 
 
   test-template:
@@ -150,5 +131,6 @@ jobs:
       - nix-build
       - nix-build-shell
       - test-template
+      - nix-flake-show
     steps:
       - run: exit 0