im trying to get the ebuild to build http://www-crca.ucsd.edu/~msp/Software/pd-0.41-0test04.src.tar.gz and wondering about the necessity of this line: MY_P="${P/_p/-}" i think this means i need a pd-0.41_p0test04.ebuild but portage says: !!! media-sound/pd-0.41_p0test04 does not follow correct package syntax. when trying to generate the digest