tailscale/misc/git_hook, branch awly/deadcode-linuxfwtest

misc/git_hook: fix building git_hook in a nested worktree (#19473)

2026-04-21T15:42:53Z

When the repo is checked out as a nested worktree, a go.work in the outer tree hijacks module resolution, which makes the rebuild fails with "main module does not contain package." Set GOWORK=off for the build since the hook is self-contained. Bumps HOOK_VERSION so existing installs pick up the fix. Updates #cleanup Change-Id: Ibd14849efc26e4e1893c5b8e300caa71573f54bd Signed-off-by: Fernando Serboncini

misc/git_hook: extract shared githook package; auto-rebuild on version bump (#19440)

2026-04-17T20:24:39Z

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

misc: add install-git-hooks.go and git hook for Change-Id tracking

2026-04-08T22:10:53Z

Add misc/install-git-hooks.go and misc/git_hook/ to the OSS repo, adapted from the corp repo. The primary motivation is Change-Id generation in commit messages, which provides a persistent identifier for a change across cherry-picks between branches. The installer uses "git rev-parse --git-common-dir" instead of go-git to find the hooks directory, avoiding a new direct dependency while still supporting worktrees. Hooks included: - commit-msg: adds Change-Id trailer - pre-commit: blocks NOCOMMIT / DO NOT SUBMIT markers - pre-push: blocks local-directory replace directives in go.mod - post-checkout: warns when the hook binary is outdated Also update docs/commit-messages.md to reflect that Change-Id is no longer optional in the OSS repo. Updates tailscale/corp#39860 Change-Id: I09066b889118840c0ec6995cc03a9cf464740ffa Signed-off-by: Brad Fitzpatrick