Ebuild removes files that Makefile tries to install. IDK why. Reproducible: Always Ships with bundled verstion of Module::Install::Share that we don't have in overlay or tree, http://search.cpan.org/~adamk/Module-Install-0.95/lib/Module/Install.pod -- we are stuck a few versions behind. IDK what the problem is, but could be related. Suppose I should probably file a bug for that too... At any rate, after I read what the Module::Install::Share *DOES*, the problem was obviously fixed here by removing from Makefile.pl the call to install the files later removed by the ebuild. Seems reasonable and probably the find and remove call is useless now. 20c20,23 < --- > src_prepare(){ > cd "${S}" > sed -i -e 's/install_share//' Makefile.PL > } 22a26 > And... if I *were* a developer I'd probably be optimistic and || die there, but I'm not.