This fixes <https://bugs.freedesktop.org/show_bug.cgi?id=104325> which showed
up in Guix as an infinite loop during cairocffi tests.
* gnu/packages/patches/cairo-setjmp-wrapper.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/gtk.scm (cairo)[source](patches): Add it.
Marius Bakke