Bumping Chef to 10.28.0 solves my issue with rubygems errors as in: https://bugs.gentoo.org/show_bug.cgi?id=505990 copying chef-10.24.0.ebuild to chef-10.28.0.ebuild and building worked great
*** Bug 506606 has been marked as a duplicate of this bug. ***
Chef 11 is significantly different than Chef 10. Please don't ignore the comparatively simple fix of bumping 10.25 to 10.28 which bring ruby 1.9 compatibility to Chef on Gentoo with the much more complex - and less useful for those stuck with Chef 10. Thanks!
*** Bug 508294 has been marked as a duplicate of this bug. ***
Removed from the tree.