We're creating a plugin for PyCharm CE to support an in-house code execution/version control system. We discovered that some core components involved do not support extension and have decided to make a fork of your repository and customize some necessary features.
However it's not clear how to build this customized PyCharm version and debug a plugin in it. So far we have tried build.xml and build/update.cmd, which replaces installed IDEA with built one, but this seems to be configured to work with IDEA only.
Could you please give some hints how to build PyCharm and configure plugin development environment against such built version?