Create a project

Create a project on launchpad and push your code to trunk.

bzr init
bzr push lp:$PROJECT

Create an empty merge proposal

Branch the code

bzr branch lp:$PROJECT project
cd project

Perform an empty commit

bzr commit --unchanged

Push the code to a branch

bzr push lp:$BRANCH

Propose the branch into trunk

Add to bileto

Add the merge proposal url to the list of merge requests and then select build