For app-office/kbudget to generate graphical reports it needs to have koffice installed at the time of compilation. kbudget should have a 'charts' or similar use flag to enable this option. I would modify the current one, but the kbudget ebuild doesn't look standard.. there are no build/compile etc functions. Reproducible: Always
Given that this application has seen no upstream love for 18 months, I'd call it abandoned and rather punt it - unless someone wants to pick it up...
Even with koffice installed at compile time, this thing won't let me generate any reports. Considering that it seems abandoned but still works apart from the report stuff, I'd say let's keep it until it really breaks or some other bugs come up. I won't touch it again, though. It's not worth it.