gegl, an input for gimp, fails its tests:
http://hydra.gnu.org/build/159641/nixlog/1/tail-reload
We already have the following comments in the package:
;; This test program seems to crash on exit. Specifically, whilst
;; g_object_unreffing bufferA and bufferB - This seems to be a bug
;; in the destructor. This is just a test program so will not have
;; any wider effect, although might be hiding another problem.
;; According to advice received on irc.gimp.org#gegl although 0.2.0
;; is the latest released version, any bug reports against it will
;; be ignored. So we are on our own.
before a line that removes one test. I would suggest to disable all tests.
Andreas