Add CI target for .#nixin

.github/workflows/clawsiecats.yml

@@ -1,48 +1,42 @@
-name: "clawsiecats-minimal"
+name: "build"
 on:
   push:
   workflow_dispatch:
+
 jobs:
+  nix-setup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Maximize build space
+        uses: AdityaGarg8/remove-unwanted-software@v2
+        with:
+          remove-dotnet: 'true'
+          remove-android: 'true'
+          remove-haskell: 'true'
+          remove-codeql: 'true'
+          remove-docker-images: 'true'
+      - uses: pierotofy/set-swap-space@master
+        with:
+          swap-size-gb: 10
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v26
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+
   clawsiecats-minimal:
     runs-on: ubuntu-latest
+    needs: nix-setup
+    steps:
+      - uses: actions/checkout@v4
+      - name: clawsiecats-minimal
+        run: |
+          nix build .#nixosConfigurations.clawsiecats-minimal.config.system.build.toplevel
+
+  nixin:
+    runs-on: ubuntu-latest
+    needs: nix-setup
     steps:
-    - name: Maximize build space
-      uses: AdityaGarg8/remove-unwanted-software@v2
-      with:
-        remove-dotnet: 'true'
-        remove-android: 'true'
-        remove-haskell: 'true'
-        remove-codeql: 'true'
-        remove-docker-images: 'true'
-    - uses: pierotofy/set-swap-space@master
-      with:
-        swap-size-gb: 10
-    - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
-      with:
-        nix_path: nixpkgs=channel:nixos-unstable
-        # - uses: cachix/cachix-action@v14
-        #   with:
-        #     name: rvfg
-        #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-        #     extraPullNames: nix-community
-    - name: Build
-      run: |
-        nix build .#nixosConfigurations.clawsiecats-minimal.config.system.build.toplevel
-      # run: |
-      #   for host in nixos/*; do
-      #     host=${host#nixos/}
-      #     if [[ "$(nix eval .#nixosConfigurations."$host".pkgs.system)" = '"x86_64-linux"' ]]; then
-      #       echo "$host"
-      #       nix build .#nixosConfigurations."$host".config.system.build.toplevel
-      #     fi
-      #   done
-    # - name: Deploy
-    #   if: ${{ github.ref == 'refs/heads/main' }}
-    #   env:
-    #     SSH_KEY: ${{secrets.DEPLOY_SSH_KEY}}
-    #   run: |
-    #     mkdir -p ~/.ssh
-    #     printenv SSH_KEY > ~/.ssh/id_ed25519
-    #     chmod 600 ~/.ssh/id_ed25519
-    #     nix run .#ci-deploy
+      - uses: actions/checkout@v4
+      - name: nixin
+        run: |
+          nix build .#nixosConfigurations.nixin.config.system.build.toplevel