The wxwidgets eclass currently doesn't support user patches. By inheriting from base.eclass this feature would be enabled. Reproducible: Always
Created attachment 278011 [details, diff] Trivial patch to inherit from base
Done.
Reopening due to breakages introduced [1]. Suggesting revert, such an inherit should be done on per-package basis. [1]:http://archives.gentoo.org/gentoo-dev/msg_357bac7c3df26d94bad65ad5ab152466.xml
Reverted.