feat(ci): nix caching (#64)

Author: feltnerm

.github/workflows/build-vms-manual.yml

@@ -33,8 +33,14 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
+        uses: nixbuild/nix-quick-install-action@v34
 
+      - name: Setup Nix cache
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-keys: |
+            nix-${{ runner.os }}-
       - name: Set up Cachix (feltnerm)
         uses: cachix/cachix-action@v15
         with:

.github/workflows/ci.yml

@@ -10,15 +10,20 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: nixbuild/nix-quick-install-action@v34
+      - uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-keys: |
+            nix-${{ runner.os }}-
       - name: flake info
-        run: nix flake info
+        run: nix flake info --show-trace
       - name: show flake
-        run: nix flake show
+        run: nix flake show --show-trace
       - name: format
         run: nix fmt
       - name: flake check (all systems)
-        run: nix flake check --all-systems
+        run: nix flake check --all-systems --show-trace
       - name: example flake check (minimal)
         run: |
           cd tests/example-flake

.github/workflows/gh-pages.yml

@@ -19,10 +19,14 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
+        uses: nixbuild/nix-quick-install-action@v34
 
-      - name: Enable binary cache
-        uses: DeterminateSystems/magic-nix-cache-action@main
+      - name: Setup Nix cache
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-keys: |
+            nix-${{ runner.os }}-
 
       - name: Build and prepare site content
         run: |

.github/workflows/update-flake-lock.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: nixbuild/nix-quick-install-action@v34
       - uses: DeterminateSystems/update-flake-lock@v21
         with:
           token: ${{ secrets.GH_TOKEN_FLAKE_UPDATES }}
@@ -21,3 +21,8 @@ jobs:
           git-author-email: 'github-actions[bot]@users.noreply.github.com'
           git-committer-name: 'feltnerm-action-bot'
           git-committer-email: 'github-actions[bot]@users.noreply.github.com'
+      - uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-keys: |
+            nix-${{ runner.os }}-

.github/workflows/vm-build.yml

@@ -26,8 +26,14 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
+        uses: nixbuild/nix-quick-install-action@v34
 
+      - name: Setup Nix cache
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-keys: |
+            nix-${{ runner.os }}-
       - name: Set up Cachix (feltnerm)
         uses: cachix/cachix-action@v15
         with:

tests/example-flake/hosts/test-nixos/default.nix

@@ -9,4 +9,7 @@
 
   # Very basic network settings
   networking.hostName = lib.mkDefault "test-minimal";
+
+  # Avoid building man cache in CI to stabilize builds
+  documentation.man.generateCaches = false;
 }