m4rie is an extension of m4ri (sci-libs/m4ri), developed and maintained by the author of m4ri, see https://bitbucket.org/malb/m4rie/src/master/ It's used quite a bit, e.g. as a part of SageMath. From the README: M4RIE is a library for fast arithmetic with dense matrices over GF(2^e) for 2 ≤ e≤ 16. The name stems from the fact that is relies heavily on M4RI. M4RIE is available under the General Public License Version 2 or later (GPLv2+).
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=10c3378f2ec1f4f02d92d3ad4fc8bb4a548bc862 commit 10c3378f2ec1f4f02d92d3ad4fc8bb4a548bc862 Author: Michael Orlitzky <mjo@gentoo.org> AuthorDate: 2020-03-06 14:52:27 +0000 Commit: Michael Orlitzky <mjo@gentoo.org> CommitDate: 2020-03-06 14:59:20 +0000 sci-libs/m4rie: new package for matrices over GF(2^e) with "e" small. The m4rie package is an extension of sci-libs/m4ri. It is used by SageMath, which can now detect and use the system copy of m4rie. Its inclusion therefore prevents pointless rebuilds of m4rie by users of SageMath on Gentoo. The ebuild was imported from the sage-on-gentoo overlay where François Bissey has been maintaining it. Closes: https://bugs.gentoo.org/711498 Package-Manager: Portage-2.3.84, Repoman-2.3.20 Signed-off-by: Michael Orlitzky <mjo@gentoo.org> sci-libs/m4rie/Manifest | 1 + sci-libs/m4rie/m4rie-20200115.ebuild | 31 +++++++++++++++++++++++++++++++ sci-libs/m4rie/metadata.xml | 30 ++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+)