setup

• checkout this repo in ext/
• add the following in buildbot.tac

from buildslave.commands.registry import commandRegistry
commandRegistry["echo"] = 'ext.echo.Echo'
commandRegistry["wrap"] = 'ext.wrapper.Wrapper'
commandRegistry["updateCache"] = 'ext.sourcecache.UpdateCache'
commandRegistry["wrapCache"] = 'ext.sourcecache.Wrapper'

• restart slave instance