pkg/glfw

Closes #6702

This removes our mach-glfw dependency and replaces it with an in-tree
pkg/glfw that includes both the source for compiling glfw as well as the
Zig bindings. This matches the pattern from our other packages.

This is based on the upstream mach-glfw work and therefore includes the
original license and copyright information.

The reasoning is stated in the issue but to summarize for the commit:

  - mach-glfw is no longer maintained, so we have to take ownership
  - mach-glfw depended on some large blobs of header files to enable
    cross-compilation but this isn't something we actually care about,
    so we can (and do) drop the blobs
  - mach-glfw blobs were hosted on mach hosts. given mach-glfw is
    unmaintained, we can't rely on this hosting
  - mach-glfw relied on a "glfw" package which was owned by another
    person to be Zig 0.14 compatible, but we no longer need to rely on
    this
  - mach-glfw builds were outdated based on latest Zig practices

.github/workflows/test.yml

@@ -10,14 +10,15 @@ jobs:
     name: "Required Checks: Test"
     runs-on: namespace-profile-ghostty-sm
     needs:
-      - build
       - build-bench
+      - build-linux
       - build-linux-libghostty
       - build-nix
       - build-snap
       - build-macos
       - build-macos-matrix
       - build-windows
+      - build-windows-cross
       - test
       - test-gtk
       - test-sentry-linux
@@ -48,52 +49,6 @@ jobs:
           echo "One or more required build workflows failed: ${{ steps.status.outputs.results }}"
           exit 1
 
-  build:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: ["namespace-profile-ghostty-md"]
-
-        target: [
-            aarch64-linux,
-            x86_64-linux,
-            x86-windows-gnu,
-            x86_64-windows-gnu,
-            # We don't support cross-compiling to macOS because the macOS build
-            # requires xcode due to the swift harness.
-            #aarch64-macos,
-            #x86_64-macos,
-          ]
-    runs-on: ${{ matrix.os }}
-    needs: test
-    env:
-      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
-      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup Cache
-        uses: namespacelabs/nscloud-cache-action@v1.2.0
-        with:
-          path: |
-            /nix
-            /zig
-
-      # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@v30
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-      - uses: cachix/cachix-action@v15
-        with:
-          name: ghostty
-          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
-
-      # Cross-compile the binary. We always use static building for this
-      # because its the only way to access the headers.
-      - name: Test Build
-        run: nix develop -c zig build -Dapp-runtime=glfw -Dtarget=${{ matrix.target }}
-
   build-bench:
     # We build benchmarks on large because it uses ReleaseFast
     runs-on: namespace-profile-ghostty-lg
@@ -124,6 +79,39 @@ jobs:
       - name: Build Benchmarks
         run: nix develop -c zig build -Dapp-runtime=glfw -Demit-bench
 
+  build-linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [namespace-profile-ghostty-md, namespace-profile-ghostty-md-arm64]
+    runs-on: ${{ matrix.os }}
+    needs: test
+    env:
+      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
+      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Cache
+        uses: namespacelabs/nscloud-cache-action@v1.2.0
+        with:
+          path: |
+            /nix
+            /zig
+
+      # Install Nix and use that to run our tests so our environment matches exactly.
+      - uses: cachix/install-nix-action@v30
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v15
+        with:
+          name: ghostty
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+
+      - name: Test Build
+        run: nix develop -c zig build -Dapp-runtime=glfw
+
   build-linux-libghostty:
     runs-on: namespace-profile-ghostty-md
     needs: test
@@ -373,6 +361,52 @@ jobs:
         shell: pwsh
         run: Get-Content -Path ".\build.log"
 
+  build-windows-cross:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ["namespace-profile-ghostty-md"]
+
+        target: [
+            x86-windows-gnu,
+            x86_64-windows-gnu,
+            # We don't support cross-compiling to macOS or Linux because
+            # we require system libraries.
+            #aarch64-linux,
+            #x86_64-linux,
+            #aarch64-macos,
+            #x86_64-macos,
+          ]
+    runs-on: ${{ matrix.os }}
+    needs: test
+    env:
+      ZIG_LOCAL_CACHE_DIR: /zig/local-cache
+      ZIG_GLOBAL_CACHE_DIR: /zig/global-cache
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Cache
+        uses: namespacelabs/nscloud-cache-action@v1.2.0
+        with:
+          path: |
+            /nix
+            /zig
+
+      # Install Nix and use that to run our tests so our environment matches exactly.
+      - uses: cachix/install-nix-action@v30
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v15
+        with:
+          name: ghostty
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+
+      # Cross-compile the binary. We always use static building for this
+      # because its the only way to access the headers.
+      - name: Test Build
+        run: nix develop -c zig build -Dapp-runtime=glfw -Dtarget=${{ matrix.target }}
+
   test:
     if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-md