ci: move snap build to separate workflow (#8405)

.github/workflows/snap.yml

@@ -0,0 +1,53 @@
+on:
+  workflow_dispatch:
+    inputs:
+      source-tarball-id:
+        description: source tarball built during build-dist
+        required: true
+        type: string
+
+name: Snap
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          [namespace-profile-ghostty-snap, namespace-profile-ghostty-snap-arm64]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 45
+    env:
+      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
+      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
+    steps:
+      - name: Download Source Tarball Artifacts
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        with:
+          artifact-ids: ${{ inputs.source-tarball-id }}
+
+      - name: Extract tarball
+        run: |
+          mkdir dist
+          tar --verbose --extract --strip-components 1 --directory dist --file ghostty-source.tar.gz
+
+      - name: Setup Cache
+        uses: namespacelabs/nscloud-cache-action@305bfa7ea980a858d511af4899414a84847c7991 # v1.2.16
+        with:
+          path: |
+            /nix
+            /zig
+
+      - run: sudo apt install -y udev
+
+      - run: sudo systemctl start systemd-udevd
+
+      # Workaround until this is fixed: https://github.com/canonical/lxd-pkg-snap/pull/789
+      - run: |
+          _LXD_SNAP_DEVCGROUP_CONFIG="/var/lib/snapd/cgroup/snap.lxd.device"
+          sudo mkdir -p /var/lib/snapd/cgroup
+          echo 'self-managed=true' | sudo tee  "${_LXD_SNAP_DEVCGROUP_CONFIG}"
+
+      - uses: snapcore/action-build@3bdaa03e1ba6bf59a65f84a751d943d549a54e79 # v1.3.0
+        with:
+          path: dist

.github/workflows/test.yml

@@ -17,7 +17,6 @@ jobs:
       - build-linux
       - build-linux-libghostty
       - build-nix
-      - build-snap
       - build-macos
       - build-macos-matrix
       - build-windows
@@ -234,6 +233,8 @@ jobs:
   build-dist:
     runs-on: namespace-profile-ghostty-md
     needs: test
+    outputs:
+      artifact-id: ${{ steps.upload-artifact.outputs.artifact-id }}
     env:
       ZIG_LOCAL_CACHE_DIR: /zig/local-cache
       ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
@@ -264,12 +265,23 @@ jobs:
           cp zig-out/dist/*.tar.gz ghostty-source.tar.gz
 
       - name: Upload artifact
+        id: upload-artifact
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: source-tarball
           path: |-
             ghostty-source.tar.gz
 
+  trigger-snap:
+    runs-on: namespace-profile-ghostty-xsm
+    needs: build-dist
+    steps:
+      - name: Trigger Snap workflow
+        run: |
+          gh workflow run snap.yml --ref ${{ github.sha }} --field source-tarball-id=${{ needs.build-dist.outputs.artifact-id }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   build-macos:
     runs-on: namespace-profile-ghostty-macos-tahoe
     needs: test
@@ -355,44 +367,6 @@ jobs:
           nix develop -c zig build --system ${{ steps.deps.outputs.deps }} -Demit-macos-app=false -Drenderer=metal -Dfont-backend=coretext_harfbuzz
           nix develop -c zig build --system ${{ steps.deps.outputs.deps }} -Demit-macos-app=false -Drenderer=metal -Dfont-backend=coretext_noshape
 
-  build-snap:
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          [namespace-profile-ghostty-snap, namespace-profile-ghostty-snap-arm64]
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 45
-    needs: [test, build-dist]
-    env:
-      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
-      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
-    steps:
-      - name: Download Source Tarball Artifacts
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
-        with:
-          name: source-tarball
-      - name: Extract tarball
-        run: |
-          mkdir dist
-          tar --verbose --extract --strip-components 1 --directory dist --file ghostty-source.tar.gz
-      - name: Setup Cache
-        uses: namespacelabs/nscloud-cache-action@a289cf5d2fcd6874376aa92f0ef7f99dc923592a # v1.2.17
-        with:
-          path: |
-            /nix
-            /zig
-      - run: sudo apt install -y udev
-      - run: sudo systemctl start systemd-udevd
-      # Workaround until this is fixed: https://github.com/canonical/lxd-pkg-snap/pull/789
-      - run: |
-          _LXD_SNAP_DEVCGROUP_CONFIG="/var/lib/snapd/cgroup/snap.lxd.device"
-          sudo mkdir -p /var/lib/snapd/cgroup
-          echo 'self-managed=true' | sudo tee  "${_LXD_SNAP_DEVCGROUP_CONFIG}"
-      - uses: snapcore/action-build@3bdaa03e1ba6bf59a65f84a751d943d549a54e79 # v1.3.0
-        with:
-          path: dist
-
   build-windows:
     runs-on: windows-2022
     # this will not stop other jobs from running