See https://devmanual.gentoo.org/eclass-reference/python-r1.eclass/ ebuild(5) http://sources.gentoo.org/eclass/python-r1?view=log should be: ebuild(5) http://sources.gentoo.org/eclass/python-r1.eclass?view=log
<floppym> mrueg: Nevermind; the @ECLASS directive in python-r1.eclass is missing the ".eclass".
i've added a sanity check for this: http://gitweb.gentoo.org/repo/gentoo.git/commit/?id=af7a9cb899d8f0451e2249efb505c3f95c5f81c0 as it's not the only eclass to fail at it: http://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a3dac837fc6d870ef35dce3f08b2c30f6d58cf0b