Created attachment 462156 [details]
This is ebuild which I have prepared for Avidata Odzyskiwanie Danych (my polish data recovery company). It is modified (patching + libewf new version requirement) version of ebuild from pentoo overlay. It was checked on x86 and amd64 architecture, but it is "keyworded" as it is only proposition of ebuild. It works with new version of libewf signed as 20160424. Ebuild for this version of libewf library is solution of bug: https://bugs.gentoo.org/show_bug.cgi?id=547418
Created attachment 462158 [details, diff]
Patch used by dff-1.3.0-r8.ebuild
Are you interested in maintaining these packages at all? https://wiki.gentoo.org/wiki/Project:Proxy_Maintainers
Or at least zerochaos might want to merge this to pentoo?