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How the 4 trunk branches and buildbot work together

This page aims to explain the mechanisms that make the wonderful diagrams on the "where is trunk?" page work.

There are three main components:

• buildbot -- this is what runs the tests.
• PQM -- this is how changes get into branches.
• buildbot-poll.py -- this script monitors the branches and builds on buildbot and implements much of our policy.

NOTE: I don't yet completely understand how a commit to a Bazaar branch on Launhpad ends up triggering a build in buildbot.

Buildbot

PQM

buildbot-poll.py