0.8.1 was released on 2014-03-30, it seems. I tried renaming the 0.7.3 ebuild to pyflakes-0.8.1.ebuild and installed the new version.Everything seemed to work as expected on amd64. Reproducible: Always
*pyflakes-0.8.1 (12 Apr 2014) 12 Apr 2014; Ian Delaney <idella4@gentoo.org> +pyflakes-0.8.1.ebuild, pyflakes-0.7.3.ebuild: bump, closes Bug #507450