https://gitweb.gentoo.org/repo/gentoo.git/commit/eclass/ruby-ng.eclass?id=8a8b23d9f45bc1ccbfc318ad12008a71d0650b75 emerge --info '=sys-cluster/pcs-0.10.8-r3::guru' * ERROR: sys-cluster/pcs-0.10.8-r3::guru failed (depend phase): * No supported implementation in USE_RUBY. * * Call stack: * ebuild.sh, line 628: Called source '/var/db/repos/guru/sys-cluster/pcs/pcs-0.10.8-r3.ebuild' * pcs-0.10.8-r3.ebuild, line 10: Called inherit 'python-single-r1' 'ruby-ng' 'systemd' * ebuild.sh, line 308: Called __qa_source '/var/db/repos/gentoo/eclass/ruby-ng.eclass' * ebuild.sh, line 123: Called source '/var/db/repos/gentoo/eclass/ruby-ng.eclass' * ruby-ng.eclass, line 358: Called ruby_get_use_targets * ruby-ng.eclass, line 326: Called _ruby_get_all_impls * ruby-ng.eclass, line 119: Called die * The specific snippet of code: * die "No supported implementation in USE_RUBY." *
https://gitweb.gentoo.org/repo/proj/guru.git/commit/?id=99d2f61efc07bfe22c06810200b1a35f736207b2