How to create a custom idea distribution?

Hi,

I'd like to create a distribution of idea CE with a bundled python-community plugin and our propriatory plugin (to eliminate plugin installation step) for Windows with a bundled jre. As I understand, there are two options (please, correct me if I am missing something):

1. Build or download a zip distribution, add 'jre' directory with its contents to it, add both plugins to a 'plugins' directory. I was able to build a zip from the idea community sources but it would be much simpler to use a prebuilt distribution to make sure that nothing is missed and a stable revision was used for the build. Unfortunately, I was able to find a downloadable zip distribution of ideaIU only. Is there a downloadable ideaIC.zip for the latest release?

2. Modify layouts.gant and build .exe installer from sources. I haven't found any documentation on how to build the installer. Should I use latest nsis with the build/nsis/idea.nsi? There's NsiFiles ant task - is there any ant target which builds installer?

thanks,
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  Oleg