Created attachment 469802 [details, diff] Patch to update the URL in pkg_postinst() dev-util/catalyst had its HOMEPAGE changed in bug 586096, but didn't have the einfo in pkg_postinst() updated to show the new URL, so these need to be updated. I've attached a patch to do this!
https://gitweb.gentoo.org/repo/gentoo.git/commit/dev-util/catalyst/catalyst-2.0.18-r4.ebuild?id=5a23f15b9e05804d23b3a10886e4622c3e30b8f8