add flatpak builder yml

com.mitchellh.ghostty.yml

@@ -0,0 +1,54 @@
+app-id: com.mitchellh.ghostty
+runtime: org.freedesktop.Platform
+runtime-version: '22.08'
+sdk: org.freedesktop.Sdk
+platform-extensions:
+  - org.freedesktop.Platform.GL.default
+default-branch: tip
+command: ghostty
+build-options:
+  append-path: /app/tmp/zig
+cleanup:
+  - /app/tmp/zig
+finish-args:
+  # 3D rendering
+  - --device=dri
+  # Windowing
+  - --share=ipc
+  - --socket=x11
+  - --socket=wayland
+  # Files (we are a terminal so we need all of them)
+  - --filesystem=host
+  # So we can escape the sandbox
+  - --talk-name=org.freedesktop.Flatpak
+modules:
+  # Note: this should be kept in sync with our flake.nix. Over time this
+  # should stabilize to being a release version and not a nightly.
+  - name: zig
+    buildsystem: simple
+    build-commands:
+      - mkdir -p /app/tmp/zig
+      - cp -r ./* /app/tmp/zig
+    sources:
+      - type: archive
+        url: https://ziglang.org/builds/zig-linux-x86_64-0.11.0-dev.1650+5e7b09ce9.tar.xz
+        sha256: 8b77a475d3d124f0d4a4c4d4e2756f4a5317838272c08341325f196e8d539747
+        only-arches:
+          - x86_64
+      - type: archive
+        url: https://ziglang.org/builds/zig-linux-aarch64-0.11.0-dev.1650+5e7b09ce9.tar.xz
+        sha256: 104c2370c6eba25164ede3fefaf133ed650cca951f2e473bd533cfb0660c4e23
+        only-arches:
+          - aarch64
+
+  - name: ghostty
+    buildsystem: simple
+    build-commands:
+      - MACH_SDK_PATH="$(pwd)/vendor/mach-sdk" zig build -Dcpu=baseline --prefix /app
+    sources:
+      - type: dir
+        path: .
+        skip:
+          - .flatpak-builder
+          - zig-cache
+          - zig-out