Merge pull request #9 from squassina/copilot/add-pipeline-for-nixos

Add NixOS build pipeline and rename Arch workflow

.github/workflows/README.md

@@ -4,9 +4,10 @@ This directory contains the GitHub Actions workflows for the MangoWC project.
 
 ## Workflows
 
-### build.yml
+### build-arch.yml
 
-**Purpose**: Builds the project to ensure code changes compile successfully.
+**Purpose**: Builds the project on Arch Linux to ensure code changes compile
+successfully.
 
 **Triggers**:
 
@@ -19,7 +20,7 @@ This directory contains the GitHub Actions workflows for the MangoWC project.
 - Source files: `**.c`, `**.h`, `**.cpp`, `**.scm`
 - Build files: `meson.build`, `meson_options.txt`, `flake.nix`
 - Protocol definitions: `protocols/**`
-- Workflow file itself: `.github/workflows/build.yml`
+- Workflow file itself: `.github/workflows/build-arch.yml`
 
 **What it does**:
 
@@ -46,6 +47,47 @@ This directory contains the GitHub Actions workflows for the MangoWC project.
 - All system packages from pacman (wayland, libinput, wlroots, mesa, etc.)
 - scenefx from AUR
 
+### build-nixos.yml
+
+**Purpose**: Builds the project on NixOS using Nix flakes to ensure code
+changes work correctly in the NixOS ecosystem.
+
+**Triggers**:
+
+- Push to `main` or `master` branch (only when code files change)
+- Pull requests to `main` or `master` branch (only when code files change)
+- Manual dispatch (workflow_dispatch)
+
+**Path filters** (only runs when these change):
+
+- Source files: `**.c`, `**.h`, `**.cpp`, `**.scm`
+- Build files: `meson.build`, `meson_options.txt`, `flake.nix`
+- Nix files: `nix/**`
+- Protocol definitions: `protocols/**`
+- Workflow file itself: `.github/workflows/build-nixos.yml`
+
+**What it does**:
+
+1. Runs on Ubuntu with Nix installed
+2. Installs Nix with flakes and nix-command experimental features
+3. Builds the project using `nix build` with the repository's flake.nix
+4. Verifies that executables (mango and mmsg) are created and executable
+5. Tests basic executable functionality
+
+**Build Strategy**:
+
+- Uses Nix flakes for reproducible builds
+- All dependencies managed through Nix
+- Leverages the repository's flake.nix configuration
+- Dependencies from nixpkgs-unstable
+
+**Dependencies**:
+
+- Nix package manager with flakes support
+- All dependencies defined in flake.nix and nix/default.nix
+- scenefx from upstream flake
+- wlroots 0.19 from nixpkgs
+
 ### docs.yml
 
 **Purpose**: Validates markdown documentation for style and formatting consistency.
@@ -100,11 +142,11 @@ This directory contains the GitHub Actions workflows for the MangoWC project.
 
 ## Development Notes
 
-The build workflow ensures that:
+The build workflows ensure that:
 
-- Only runs when actual code or build configuration changes
+- Only run when actual code or build configuration changes
 - All dependencies are properly installed
-- The project compiles without errors
+- The project compiles without errors on both Arch Linux and NixOS
 - Both main executables (`mango` and `mmsg`) are built successfully
 
 The docs workflow ensures that:
@@ -113,8 +155,9 @@ The docs workflow ensures that:
 - Documentation follows consistent formatting
 - Markdown files are well-formed and free of common issues
 
-If the build workflow fails, check:
+If a build workflow fails, check:
 
 1. Dependencies are up to date in the workflow file
 2. wlroots and scenefx versions match requirements in meson.build
 3. Build configuration in meson.build hasn't changed
+4. For NixOS builds: flake.nix and nix/default.nix are correctly configured

.github/workflows/build-arch.yml

@@ -1,4 +1,4 @@
-name: Build
+name: Build (Arch Linux)
 
 on:
   push:
@@ -12,7 +12,7 @@ on:
       - 'meson_options.txt'
       - 'flake.nix'
       - 'protocols/**'
-      - '.github/workflows/build.yml'
+      - '.github/workflows/build-arch.yml'
   pull_request:
     branches: [main, master]
     paths:
@@ -24,7 +24,7 @@ on:
       - 'meson_options.txt'
       - 'flake.nix'
       - 'protocols/**'
-      - '.github/workflows/build.yml'
+      - '.github/workflows/build-arch.yml'
   workflow_dispatch:
 
 jobs:

.github/workflows/build-nixos.yml

@@ -0,0 +1,77 @@
+name: Build (NixOS)
+
+on:
+  push:
+    branches: [main, master]
+    paths:
+      - '**.c'
+      - '**.h'
+      - '**.cpp'
+      - '**.scm'
+      - 'meson.build'
+      - 'meson_options.txt'
+      - 'flake.nix'
+      - 'nix/**'
+      - 'protocols/**'
+      - '.github/workflows/build-nixos.yml'
+  pull_request:
+    branches: [main, master]
+    paths:
+      - '**.c'
+      - '**.h'
+      - '**.cpp'
+      - '**.scm'
+      - 'meson.build'
+      - 'meson_options.txt'
+      - 'flake.nix'
+      - 'nix/**'
+      - 'protocols/**'
+      - '.github/workflows/build-nixos.yml'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+          extra_nix_config: |
+            experimental-features = nix-command flakes
+
+      - name: Build project with Nix
+        run: |
+          nix build --print-build-logs
+
+      - name: Check build outputs
+        run: |
+          echo "✅ Build completed successfully!"
+          echo "Built executables:"
+          ls -lh result/bin/
+
+      - name: Verify executables
+        run: |
+          # Check that mango executable exists and is executable
+          if [ -x "result/bin/mango" ]; then
+            echo "✅ mango executable found and is executable"
+            result/bin/mango --version || echo "Note: --version may not be supported"
+          else
+            echo "❌ mango executable not found or not executable"
+            exit 1
+          fi
+          
+          # Check that mmsg executable exists and is executable
+          if [ -x "result/bin/mmsg" ]; then
+            echo "✅ mmsg executable found and is executable"
+            result/bin/mmsg --help || echo "Note: --help may not be supported"
+          else
+            echo "❌ mmsg executable not found or not executable"
+            exit 1
+          fi