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tailscale/misc/git_hook/README.md
Fernando Serboncini 514d7d28e7
misc/git_hook: extract shared githook package; auto-rebuild on version bump (#19440) 
Pull the hook logic into a reusable githook library package so
tailscale/corp can share it via a thin wrapper main instead of
keeping a forked copy in sync.

The install flow also changes: a wrapper scripts now build the
binary and reinstall the git hooks. Pulling new shared code no
longer requires re-running the installer.

Updates tailscale/corp#39860

Change-Id: I4d606d11c8c883015c190c54e3387a7f9fe4dd32

Signed-off-by: Fernando Serboncini <fserb@tailscale.com>
2026-04-17 16:24:39 -04:00

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git_hook

Tailscale's git hooks.

The shared logic lives in the githook/ package and is also imported by tailscale/corp.

Install

From the repo root:

./tool/go run ./misc/install-git-hooks.go

The script auto-updates in the future.

Adding your own hooks

Create an executable .git/hooks/<hook-name>.local to chain a custom script after a built-in hook. For example, put a custom check in .git/hooks/pre-commit.local and chmod +x it. The local hook runs only if the built-in hook succeeds; failure aborts the git operation.

Changing the shared code

When you change anything under githook/ or launcher.sh, bump HOOK_VERSION in the same commit so every dev auto rebuilds on their next git operation.

Because tailscale/corp imports githook/, also plan the downstream update: after landing here, bump corp's tailscale.com dependency and bump corp's own misc/git_hook/HOOK_VERSION on a separate commit. Both are required.