fix: use ghostty fork with Windows stdout fix, re-enable native Windows build

Author: remorses

.github/workflows/build-windows.yml

@@ -9,13 +9,58 @@ env:
   ZIG_VERSION: 0.15.2
 
 jobs:
-  # NOTE: Native Windows builds are temporarily disabled due to a ghostty dependency issue:
-  # https://github.com/ghostty-org/ghostty/issues/10147
-  # The ghostty code generators crash on Windows because they call stdout.end()
-  # which tries to truncate stdout (not supported on Windows console handles).
-  # 
-  # For now, we cross-compile from macOS and test on Windows.
-  # The cross-compiled binaries work correctly (2879/2888 tests pass).
+  build-native-windows:
+    name: Windows - Native Build and Test
+    runs-on: windows-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Setup Zig
+        uses: goto-bus-stop/setup-zig@v2
+        with:
+          version: ${{ env.ZIG_VERSION }}
+
+      - name: Install dependencies
+        run: bun install
+
+      # Workaround for Zig 0.15.2 bug on Windows (https://github.com/ziglang/zig/issues/25805)
+      # When cwd and cache path are on different drives, build fails
+      # Setting cache dir explicitly to be on the same drive as the source
+      - name: Build native with Zig (Windows only)
+        working-directory: packages/core/src/zig
+        run: zig build -Doptimize=ReleaseFast --cache-dir .zig-cache --global-cache-dir .zig-cache
+
+      - name: Copy native binaries to node_modules
+        working-directory: packages/core
+        run: bun scripts/build.ts --native --skip-zig-build
+
+      - name: Verify Windows binary exists
+        shell: pwsh
+        run: |
+          if (!(Test-Path "packages/core/node_modules/@opentui/core-win32-x64/opentui.dll")) {
+            Write-Error "Windows x64 binary missing!"
+            exit 1
+          }
+          Write-Host "Windows x64 binary exists"
+          Get-ChildItem "packages/core/node_modules/@opentui/core-win32-x64/"
+
+      - name: Run native tests
+        working-directory: packages/core/src/zig
+        run: zig build test --summary all --cache-dir .zig-cache --global-cache-dir .zig-cache
+
+      - name: Build lib
+        working-directory: packages/core
+        run: bun run build:lib
+
+      - name: Run JS tests
+        working-directory: packages/core
+        run: bun run test:js
 
   build-on-macos:
     name: macOS - Cross-compile for Windows

packages/core/src/zig/build.zig.zon

@@ -9,8 +9,9 @@
             .hash = "uucode-0.1.0-ZZjBPvoGQACkgWDKIrtI8CQcSXIufU3Kvty-pIfh02i2",
         },
         .ghostty = .{
-            .url = "git+https://github.com/ghostty-org/ghostty.git#1c2db85aa41c7d929cb23b408229e297dce2758a",
-            .hash = "ghostty-1.3.0-dev-5UdBC6IDPgQ28qiPT4e-lWQJav95I4XjR9ddmEsv-dyp",
+            // Using fork with Windows fix: https://github.com/ghostty-org/ghostty/issues/10147
+            .url = "git+https://github.com/remorses/ghostty.git#fd725490a14e4500b6676d9f4d67f6a566006bd0",
+            .hash = "ghostty-1.3.0-dev-5UdBC1YFPgTu_jyuC0G4FGOhjsKgATa1Eqi5MY02ycYh",
         },
     },
     .paths = .{