Unmaintained since at least 2014. The current release is 1.5 dev branch from 2010. Upstream had a few stable 1.4 releases since but 1.5 seems to be dead. Multiple build failures reported, and an ebuild vulnerability.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=bdcf997b9fc70e6c86afb92a17a9495771347ad1 commit bdcf997b9fc70e6c86afb92a17a9495771347ad1 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2020-06-14 07:32:13 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2020-06-14 07:32:17 +0000 package.mask: Last rite app-mobilephone/kannel{,-sqlbox} Bug: https://bugs.gentoo.org/728186 Signed-off-by: Michał Górny <mgorny@gentoo.org> profiles/package.mask | 9 +++++++++ 1 file changed, 9 insertions(+)
https://gitweb.gentoo.org/repo/gentoo.git/diff/profiles/package.mask?id=7d441d1f18512fe4506528811613df8f802d2e51