aspiers/git-branch-mixer
.agents/skills/git-branch-mixer/SKILL.md
Manage git branch mixes and run mixdowns using ggmx and ggmxd. Use when the user says things like "add this branch to the mix", "remove a branch from the mix", "show the mix", "mix down the branches", or "run a mixdown".
$ install --global
skillsauthnpx skillsauth add aspiers/git-config git-branch-mixerInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 3, 2026, 8:37 AM27.1s1 file scanned
SKILL.md
- name:
- git-branch-mixer
- description:
- Manage git branch mixes and run mixdowns using ggmx and ggmxd. Use when the user says things like "add this branch to the mix", "remove a branch from the mix", "show the mix", "mix down the branches", or "run a mixdown".
- disable-model-invocation:
- true
Git Branch Mixer
ggmx (git mix) configures named sets of branches to merge together.
ggmxd (git mixdown) executes a mixdown — resetting a target branch to a
base and merging all the other branches in.
The typical use case is testing a combination of feature/bugfix branches together via a throw-away temporary working branch.
Configuring mixes with ggmx
ggmx # show all configured mixes
ggmx <target> # show branches in mix for <target>
ggmx <target> A B C # set mix for <target> to branches A, B, C
# (first branch is the base)
ggmx [<target>] +D [-B] # add D to / remove B from mix for <target>
# (defaults to 'working' if <target> omitted)
ggmx -d <target> # delete the mix for <target>
Mixes are stored in git config under mixdown.<target>.
You can also edit them directly with git config --edit.
Running a mixdown with ggmxd
ggmxd # run mixdown using config for default target ('working')
ggmxd -b <target> # run mixdown using config for <target>
ggmxd BASE B1 [B2 ...] # explicit mixdown: reset to BASE, merge B1, B2...
ggmxd -b <target> BASE B1 ... # explicit mixdown into named target branch
Always pass -c / --checkout to leave the target branch checked out
after the mixdown, ready for testing:
ggmxd -c # mixdown from config, stay on target branch
ggmxd -c BASE B1 B2 # explicit mixdown, stay on target branch
Without -c, ggmxd restores your previously checked-out branch after
completing the mixdown. Use this when you want to rebuild the mix in the
background without switching away from your current branch.
Other options
ggmxd -s STRATEGY # set merge strategy (default: octopus)
# use e.g. -s recursive for sequential merges
# with conflict resolution shells between each
After changing a mix
After any ggmx operation that modifies a mix (adding, removing, or setting
branches), always ask the user whether they want to run a mixdown now.
Typical workflow
# One-time setup: configure the mix for the 'working' target branch
ggmx working main feature/foo bugfix/bar
# Add another branch later
ggmx +feature/baz
# Run the mixdown and stay on the result for testing
ggmxd -c
# Rebuild after rebasing one of the branches
ggmxd -c
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