See #31164. Upstream code at https://pypi.org/project/admcycles/ and https://gitlab.com/jo314schmitt/admcycles.

CC: @mkoeppe

Component: packages: optional

Author: Vincent Delecroix

Branch/Commit: 55ae682

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/31238