cmux-ghostty

name: cmux-ghostty description: "Ghostty submodule and GhosttyKit workflow rules for cmux. Use when modifying the ghostty submodule, rebuilding GhosttyKit.xcframework, updating the parent submodule pointer, or documenting fork conflict notes."

cmux Ghostty

GhosttyKit builds

When rebuilding GhosttyKit.xcframework, always use Release optimizations:

cd ghostty && zig build -Demit-xcframework=true -Dxcframework-target=universal -Doptimize=ReleaseFast

Submodule workflow

Ghostty changes must be committed in the ghostty submodule and pushed to the manaflow-ai/ghostty fork. Keep docs/ghostty-fork.md up to date with any fork changes and conflict notes.

cd ghostty
git remote -v  # origin = upstream, manaflow = fork
git checkout -b <branch>
git add <files>
git commit -m "..."
git push manaflow <branch>

To keep the fork up to date with upstream:

cd ghostty
git fetch origin
git checkout main
git merge origin/main
git push manaflow main

Then update the parent repo with the new submodule SHA:

cd ..
git add ghostty
git commit -m "Update ghostty submodule"

Submodule safety

When modifying a submodule, always push the submodule commit to its remote main branch before committing the updated pointer in the parent repo. Never commit on a detached HEAD or temporary branch; the commit can be orphaned and lost.

Verify with:

cd <submodule> && git merge-base --is-ancestor HEAD origin/main

Detailed reference

• Read references/submodule-safety.md before committing submodule pointer updates or resolving Ghostty fork conflicts.