See the project home page for the features that this package provides.
This is now in sunrise overlay: https://overlays.gentoo.org/proj/sunrise/browser/sunrise/dev-python/grin Hopefully it would be reviewed in the next couple of days.
The ebuild in sunrise was outdated and unmaintained, so it got removed.
Hi According to the project's homepage on pypi, the last update dates back to 2010. This project is most likely dead. We won't package it. Closing.