If someone is interested, please make an ebuild.
Created attachment 358522 [details] dev-python/gmvault-1.8.1_beta.ebuild I have put together a hackish ebuild. Installs fine. Note that it should be reviewed by someone who understands python packaging.
Created attachment 358524 [details, diff] gmvault-fix-python-path.patch Its startup scripts find /user/bin/python earlier than python2{2_6,2_7} thus it will fail if python-3.x is the default.