Add no-bootstrap option for fast worktree clones

[bridiver]

This is useful for bots that need to create worktrees for running presubmit, etc...

Running vendor/depot_tools/gclient-new-workdir.py [repo] [workdir] --use-git-worktree --no-copy-on-write --max-depth 4 gives you a full (almost) recursive worktree checkout and then pnpm run init --nohooks --no-bootstrap syncs up the repo after checkout out the correct brave-core branch

[github-actions]

📋 Code Owners Summary

2 file(s) changed, 2 with assigned owners

1 team(s) affected: @brave/build-commands-reviewers

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Owners and Their Files

@brave/build-commands-reviewers — 2 file(s)

• build/commands/lib/syncUtils.js
• build/commands/scripts/sync.js

[bridiver]

it's not great that we have to do this in two places, this needs a follow-up

[goodov]

Running vendor/depot_tools/gclient-new-workdir.py [repo] [workdir] --use-git-worktree --no-copy-on-write --max-depth 4 gives you a full (almost) recursive worktree checkout and then pnpm run init --nohooks --no-bootstrap syncs up the repo after checkout out the correct brave-core branch

this workflow with gclient-new-workdir.py only makes sense if you're working on a chromium repo directly.

for brave development you should have gitcache configured and create worktrees from src/brave, the gitcache will do the rest.

allowing --no-bootstrap makes no sense to me at all - if you configured gitcache, then you use it everywhere. Just make sure you don't misconfigure it in any new worktree you add.

here's a script to have multiple brave checkout with gitcache, siso cache and vpython cache all shared automatically (run without args first time, then pass worktree name via first arg): https://gist.github.com/goodov/4d1c8721ec7059621b25594dfe611b02

[bridiver]

I added this for a very specific purpose which is to run presubmit and gn checks only for bot PRs. This creates a very fast and space efficient checkout. Significant time and download is wasted for bootstrap.