Add ci & format & drop reth (#1)

* add ci

* format

* update name

* drop reth

.github/workflows/check.yaml

@@ -0,0 +1,34 @@
+name: "check"
+on:
+  pull_request:
+  push:
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ !startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/main' }}
+
+jobs:
+  check:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: cachix/install-nix-action@v25
+      with:
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Check nix flake
+      run: |
+        nix flake check
+
+    - name: Check formatting
+      run: |
+        nix run nixpkgs#nixpkgs-fmt -- --check .
+
+    - name: Build home-manager configuration
+      run: |
+        nix build .#homeConfigurations.vaporif.activationPackage
+
+    - name: Test build on different systems
+      run: |
+        nix build .#homeConfigurations.vaporif.activationPackage --system aarch64-darwin