Is there no way to have the dependency over gdk-pixbuf not require an = dependency but rather a ? dependency? The only thing that should be needed is making sure that the tests will show that there is no support for those in the installed gdk-pixbuf. If the bindings will always have them even if gdk-pixbuf does not come with them, replace it with a straight depend.
By the way, if it's guessing depending on whether gdk-pixbuf has been installed with or without those, the dep is broken because you could have installed a gdk-pixbuf without jpeg, and build the binpkg...
I don't care enough to tinker with those useflags. Since it's a painting tool I think it's reasonable to assume the user wants to have jpeg and tiff support. + 17 Jun 2012; Julian Ospald <hasufell@gentoo.org> pinta-1.3.ebuild, + pinta-9999.ebuild: + remove useflags wrt bug #421673
Sounds good, thanks :)