actions: add separate validate flakes step

.github/workflows/build-and-cache.yml

@@ -24,8 +24,6 @@ jobs:
           name: thiagokokada-nix-configs
       - name: Set default git branch (to reduce log spam)
         run: git config --global init.defaultBranch master
-      - name: Check if all `.nix` files are formatted correctly
-        run: nix run '.#formatCheck'
       - name: 'Build Home-Manager configs for: home-linux, steamdeck'
         run: |-
           nix build --print-build-logs '.#homeConfigurations.home-linux.activationPackage'

.github/workflows/validate-flakes.yml

@@ -0,0 +1,30 @@
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v22
+        with:
+          extra_nix_config: access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+          nix_path: nixpkgs=channel:nixos-unstable
+      - name: Setup aarch64-linux
+        run: |
+          DEBIAN_FRONTEND=noninteractive
+          sudo apt-get update -q -y
+          sudo apt-get install -q -y qemu-system-aarch64 qemu-efi binfmt-support qemu-user-static
+          sudo sh -c "echo 'system-features = aarch64-linux' >> /etc/nix/nix.conf"
+      - uses: cachix/cachix-action@v12
+        with:
+          authToken: ${{ secrets.CACHIX_TOKEN }}
+          extraPullNames: nix-community
+          name: thiagokokada-nix-configs
+      - name: Set default git branch (to reduce log spam)
+        run: git config --global init.defaultBranch master
+      - name: Check if all `.nix` files are formatted correctly
+        run: nix run '.#formatCheck'
+      - name: Validate Flakes
+        run: nix flake check
+name: validate-flakes
+"on":
+  - push
+  - workflow_dispatch

actions/build-and-cache.nix

@@ -15,8 +15,6 @@ with constants;
         installNixActionStep
         cachixActionStep
         setDefaultGitBranchStep
-        checkNixStep
-        # validateFlakesStep
         (buildHomeManagerConfigurations { })
         (buildNixOSConfigurations { })
       ];

actions/steps.nix

@@ -104,4 +104,13 @@ with constants;
           diffIds));
     };
   };
+  setupAarch64 = {
+    name = "Setup aarch64-linux";
+    run = ''
+      DEBIAN_FRONTEND=noninteractive
+      sudo apt-get update -q -y
+      sudo apt-get install -q -y qemu-system-aarch64 qemu-efi binfmt-support qemu-user-static
+      sudo sh -c "echo 'system-features = aarch64-linux' >> /etc/nix/nix.conf"
+    '';
+  };
 }

actions/validate-flakes.nix

@@ -0,0 +1,23 @@
+let
+  steps = import ./steps.nix;
+  constants = import ./constants.nix;
+in
+with constants;
+{
+  name = "validate-flakes";
+  on = [ "push" "workflow_dispatch" ];
+  jobs = {
+    build-linux = {
+      inherit (ubuntu) runs-on;
+      steps = with steps; [
+        checkoutStep
+        installNixActionStep
+        setupAarch64
+        cachixActionStep
+        setDefaultGitBranchStep
+        checkNixStep
+        validateFlakesStep
+      ];
+    };
+  };
+}

flake.nix

@@ -179,6 +179,7 @@
         "build-and-cache"
         "update-flakes"
         "update-flakes-darwin"
+        "validate-flakes"
       ])
     ]); # END recursiveMergeAttrs
 }