ci: add -Dsnap test

.github/workflows/test.yml

@@ -19,6 +19,7 @@ jobs:
       - build-nix
       - build-macos
       - build-macos-matrix
+      - build-snap
       - build-windows
       - test
       - test-gtk
@@ -118,7 +119,41 @@ jobs:
         run: |
           nix develop -c \
             zig build \
-            -Dflatpak=true
+            -Dflatpak
+
+  build-snap:
+    strategy:
+      fail-fast: false
+    runs-on: namespace-profile-ghostty-sm
+    needs: test
+    env:
+      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
+      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Setup Cache
+        uses: namespacelabs/nscloud-cache-action@a289cf5d2fcd6874376aa92f0ef7f99dc923592a # v1.2.17
+        with:
+          path: |
+            /nix
+            /zig
+
+      # Install Nix and use that to run our tests so our environment matches exactly.
+      - uses: cachix/install-nix-action@7be5dee1421f63d07e71ce6e0a9f8a4b07c2a487 # v31.6.1
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
+        with:
+          name: ghostty
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+
+      - name: Build with Snap
+        run: |
+          nix develop -c \
+            zig build \
+            -Dsnap
 
   build-linux:
     strategy:
@@ -275,7 +310,7 @@ jobs:
   trigger-snap:
     if: github.event_name != 'pull_request'
     runs-on: namespace-profile-ghostty-xsm
-    needs: build-dist
+    needs: [build-dist, build-snap]
     steps:
       - name: Checkout code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

snap/snapcraft.yaml

@@ -80,7 +80,7 @@ parts:
     override-build: |
       craftctl set version=$(cat VERSION)
       $CRAFT_PART_SRC/../../zig/src/zig build \
-        -Dsnap=true \
+        -Dsnap \
         -Dpatch-rpath=\$ORIGIN/../usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR:/snap/core24/current/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR \
         -Doptimize=ReleaseFast \
         -Dcpu=baseline \