Clone this repo:
  1. a524d1e [path] Deprecate api.path.eq() by Rob Mohr · 2 days ago main
  2. a11c8e6 [engine] Ignore pycache dirs in emptiness check by Rob Mohr · 2 days ago
  3. 2bb06f0 [config_types.Path] Remove uses of Path.is_parent_of() by Rob Mohr · 2 days ago
  4. 418a7e4 Replace Path.join() calls by Rob Mohr · 3 days ago
  5. 62ca441 [commands/test] Add warnings for long-running tests by Rob Mohr · 3 days ago


Recipes are a domain-specific language (embedded in Python) for specifying sequences of subprocess calls in a cross-platform and testable way.

They allow writing build flows which integrate with the rest of LUCI.

Documentation for the recipe engine (including this file!). Take a look at the user guide for some hints on how to get started. See the implementation details doc for more detailed implementation information about the recipe engine.


  • Sign the Google CLA.
  • Make sure your and are configured in git config.

Run the following to setup the code review tool and create your first review:

# Get `depot_tools` in $PATH if you don't have it
git clone $HOME/src/depot_tools
export PATH="$PATH:$HOME/src/depot_tools"

# Check out the recipe engine repo
git clone $HOME/src/recipes-py

# make your change
cd $HOME/src/recipes-py
git new-branch cool_feature
# hack hack
git commit -a -m "This is awesome"

# This will ask for your Google Account credentials.
git cl upload -s -r
# Wait for approval over email.
# Click "Submit to CQ" button or ask reviewer to do it for you.
# Wait for the change to be tested and landed automatically.

Use git cl help and git cl help <cmd> for more details.