The present version of the x11-libs/libxcb-1.8 ebuild fails to build with the following message: !!! ERROR in x11-libs/libxcb-1.8::gentoo: !!! In autotools-utils_src_install at line 1599 !!! directories in docdir require at least EAPI 4 Changing EAPI=3 to EAPI=4 in the ebuild leads to a successful build. Reproducible: Always Steps to Reproduce: 1. ebuild x11-libs/libxcb Actual Results: See error above. Expected Results: Successful build. I use cave rather than portage, but the problem is clearly in the ebuild.
This was a bug in the autotools-utils.eclass, used by xorg-2.eclass, used by libxcb-1.8.ebuild: 20:13 <+CIA-12> mgorny * gentoo-x86/eclass/ (ChangeLog autotools-utils.eclass): Replace the docdir-directory error with a warning. Wait an hour or so, and "emerge --sync"