CI: add a macos job

Author: bilelmoussaoui

.github/workflows/macos.yml

@@ -0,0 +1,54 @@
+name: macOS
+
+on:
+  push:
+    branches: [master]
+    paths:
+      - ".github/workflows/macos.yml"
+      - "gdk4/**"
+      - "gsk4/**"
+      - "gtk4/**"
+      - "gtk4-macros/**"
+  pull_request:
+    paths:
+      - ".github/workflows/macos.yml"
+      - "gdk4/**"
+      - "gsk4/**"
+      - "gtk4/**"
+      - "gtk4-macros/**"
+  workflow_dispatch:
+
+jobs:
+  ci-macos:
+    name: macOS
+    runs-on: macos-12 
+    steps:
+    - uses: actions/checkout@v3
+        
+    - name: Install GTK
+      run: |
+        brew install gtk4
+        
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: stable
+        components: clippy
+        
+    - name: Build
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --features v4_8,xml_validation
+    - name: Clippy
+      uses: actions-rs/cargo@v1
+      with:
+        command: clippy
+        args: --features v4_8,xml_validation
+    # FIXME: renable once https://github.com/gtk-rs/gtk4-rs/issues/1235 is fixed
+    #- name: Tests
+    #  uses: actions-rs/cargo@v1
+    #  with:
+    #    command: test
+    #    args: --features v4_8,xml_validation