media-radio/gpredict uses the x11-libs/goocanvas ebuild to load jpeg images which in turn uses x11-libs/gdk-pixbuf to load them. This requires gdk-pixbuf to be built with the jpeg use flag. I propose that the gpredict ebuild require a yet to be created jpeg use flag from x11-libs/goocanvas which will in turn require x11-libs/gdk-pixbuf to be built with the jpeg use flag. Fixing this bug in the gpredict ebuild requires fixing bug Bug# 61640( https://bugs.gentoo.org/show_bug.cgi?id=616410 ) for the goocanvas ebuild. -Jess
Thanks for reporting Jess. Nice catch. I think it is much easier to simply not rely on goocanvas or gtk bringing in gdk_pixbuf but add x11-libs/gdk_pixbuf[jpeg] to gpredicts rdeps.
That works, i just thought it was a bit weird since gpredict doesnt use gdk_pixbuff directly, goocanvas does. Seems that if there was a jpeg use flag for goocanvas when people create ebuilds for other things that use it they would be more likely to include it as a dependency than to include gdk-pixbuf[jpeg] which isnt even listed as a dependency of their app.
Fixed in gpredict-1.3-r1. > media-radio/gpredict: Add missing USE dep (Bug #616414). Thanks J.Haas
(In reply to Jess Haas from comment #2) > That works, i just thought it was a bit weird since gpredict doesnt use > gdk_pixbuff directly, goocanvas does. Seems that if there was a jpeg use > flag for goocanvas when people create ebuilds for other things that use it > they would be more likely to include it as a dependency than to include > gdk-pixbuf[jpeg] which isnt even listed as a dependency of their app. Implicit dependencies are always a pain. So best to not rely on them (my fault). But sure - having control from goocanvas out has also makes some sense.
