I have recently installed the GNUStep ecosystem of applications and libraries on my retroPie installation. The package manager has the base system and some applications.
After installing some I noticed that there are bugs in those releases that might have been fixed in later versions. For example Project Center was unable to open the Makefiles of a project in the editor. Seemed like a very basic problem, so I downloaded the latest source and built it. Problem gone.
Another cool app is GNUMail. The distributions stock package had problems connecting to the gmail mail server. So I downloaded the source and built it. I can now connect to the mail server, but the UI is buggy. Parts of the text are hidden unless you click on it. And it crashes easily when opening messages.
So I have decided to build everything from the latest sources, and probably do some bug fixing if time permits.