ci: optimizations (#9926)

This adds a couple optimizations to our CI:

1. macOS matrix gone, only test that freetype builds in addition to
Coretext.
2. Move Flatpak out to a triggered build on main similar to snaps. This
was our longest build and avoiding it in PRs is a win since it rarely
fails.

.github/workflows/flatpak.yml

@@ -0,0 +1,50 @@
+on:
+  workflow_dispatch:
+    inputs:
+      source-run-id:
+        description: run id of the workflow that generated the artifact
+        required: true
+        type: string
+      source-artifact-id:
+        description: source tarball built during build-dist
+        required: true
+        type: string
+
+name: Flatpak
+
+jobs:
+  build:
+    if: github.repository == 'ghostty-org/ghostty'
+    name: "Flatpak"
+    container:
+      image: ghcr.io/flathub-infra/flatpak-github-actions:gnome-47
+      options: --privileged
+    strategy:
+      fail-fast: false
+      matrix:
+        variant:
+          - arch: x86_64
+            runner: namespace-profile-ghostty-md
+          - arch: aarch64
+            runner: namespace-profile-ghostty-md-arm64
+    runs-on: ${{ matrix.variant.runner }}
+    steps:
+      - name: Download Source Tarball Artifacts
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
+        with:
+          run-id: ${{ inputs.source-run-id }}
+          artifact-ids: ${{ inputs.source-artifact-id }}
+          github-token: ${{ github.token }}
+
+      - name: Extract tarball
+        run: |
+          mkdir dist
+          tar --verbose --extract --strip-components 1 --directory dist --file ghostty-source.tar.gz
+
+      - uses: flatpak/flatpak-github-actions/flatpak-builder@92ae9851ad316786193b1fd3f40c4b51eb5cb101 # v6.6
+        with:
+          bundle: com.mitchellh.ghostty
+          manifest-path: dist/flatpak/com.mitchellh.ghostty.yml
+          cache-key: flatpak-builder-${{ github.sha }}
+          arch: ${{ matrix.variant.arch }}
+          verbose: true

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
       - build-linux-libghostty
       - build-nix
       - build-macos
-      - build-macos-matrix
+      - build-macos-freetype
       - build-snap
       - build-windows
       - test
@@ -44,7 +44,7 @@ jobs:
       - test-debian-13
       - valgrind
       - zig-fmt
-      - flatpak
+
     steps:
       - id: status
         name: Determine status
@@ -421,6 +421,24 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+  trigger-flatpak:
+    if: github.event_name != 'pull_request'
+    runs-on: namespace-profile-ghostty-xsm
+    needs: [build-dist, build-flatpak]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Trigger Flatpak workflow
+        run: |
+          gh workflow run \
+            flatpak.yml \
+            --ref ${{ github.ref_name || 'main' }} \
+            --field source-run-id=${{ github.run_id }} \
+            --field source-artifact-id=${{ needs.build-dist.outputs.artifact-id }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   build-macos:
     runs-on: namespace-profile-ghostty-macos-tahoe
     needs: test
@@ -464,7 +482,7 @@ jobs:
           cd macos
           xcodebuild -target Ghostty-iOS "CODE_SIGNING_ALLOWED=NO"
 
-  build-macos-matrix:
+  build-macos-freetype:
     runs-on: namespace-profile-ghostty-macos-tahoe
     needs: test
     steps:
@@ -493,18 +511,10 @@ jobs:
       - name: Test All
         run: |
           nix develop -c zig build test --system ${{ steps.deps.outputs.deps }} -Drenderer=metal -Dfont-backend=freetype
-          nix develop -c zig build test --system ${{ steps.deps.outputs.deps }} -Drenderer=metal -Dfont-backend=coretext
-          nix develop -c zig build test --system ${{ steps.deps.outputs.deps }} -Drenderer=metal -Dfont-backend=coretext_freetype
-          nix develop -c zig build test --system ${{ steps.deps.outputs.deps }} -Drenderer=metal -Dfont-backend=coretext_harfbuzz
-          nix develop -c zig build test --system ${{ steps.deps.outputs.deps }} -Drenderer=metal -Dfont-backend=coretext_noshape
 
       - name: Build All
         run: |
           nix develop -c zig build --system ${{ steps.deps.outputs.deps }} -Demit-macos-app=false -Drenderer=metal -Dfont-backend=freetype
-          nix develop -c zig build --system ${{ steps.deps.outputs.deps }} -Demit-macos-app=false -Drenderer=metal -Dfont-backend=coretext
-          nix develop -c zig build --system ${{ steps.deps.outputs.deps }} -Demit-macos-app=false -Drenderer=metal -Dfont-backend=coretext_freetype
-          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-windows:
     runs-on: windows-2022
@@ -1092,32 +1102,6 @@ jobs:
           build-args: |
             DISTRO_VERSION=13
 
-  flatpak:
-    if: github.repository == 'ghostty-org/ghostty'
-    name: "Flatpak"
-    container:
-      image: ghcr.io/flathub-infra/flatpak-github-actions:gnome-47
-      options: --privileged
-    strategy:
-      fail-fast: false
-      matrix:
-        variant:
-          - arch: x86_64
-            runner: namespace-profile-ghostty-md
-          - arch: aarch64
-            runner: namespace-profile-ghostty-md-arm64
-    runs-on: ${{ matrix.variant.runner }}
-    needs: test
-    steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-      - uses: flatpak/flatpak-github-actions/flatpak-builder@92ae9851ad316786193b1fd3f40c4b51eb5cb101 # v6.6
-        with:
-          bundle: com.mitchellh.ghostty
-          manifest-path: flatpak/com.mitchellh.ghostty.yml
-          cache-key: flatpak-builder-${{ github.sha }}
-          arch: ${{ matrix.variant.arch }}
-          verbose: true
-
   valgrind:
     if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-lg