[Lazarus] Can't find unit Interfaces on launchpad's build farm - is Lazarus/FPC broken in Ubuntu 12.04?

[Bernd]

2012/9/23 Bernd <prof7bit at gmail.com>:

> I'm going to write a wiki page with instructions next week.

Maybe an IDE package for producing a .deb from any Lazarus project or
uploading to launchpad build servers with a click of the mouse would
be even better :-)

Is there an existing package or example where I can see and study how
it is done to add a new tab to the project dialog?