In the ebuild, SRC_URI="mirror://sourceforge/popfile/popfile-0.20.1.zip" should read SRC_URI="mirror://sourceforge/popfile/popfile-0.21.1.zip"
sorry about that, fixed in portage
I must apologise that we committed the wrong fix for this bug. The ebuild should have been called 'popfile-0.20.1.ebuild', and not popfile-0.21.1.ebuild. This ebuild does not work with popfile-0.21.1 at this time, and has been marked as unstable until we can fix it. I've added the ebuild for popfile-0.20.1, which can be used until we've had a chance to fix the ebuild for popfile-0.21.1. Best regards, Stu