<div id="comment:0"></div> CC: @kliem @dimpase Component: **porting** Author: **Matthias Koeppe** Branch/Commit: **[`cf94357`](https://github.com/sagemath/sagetrac-mirror/commit/cf94357a4400fc813b67287662262f5291a5db14)** Reviewer: **Dima Pasechnik** _Issue created by migration from https://trac.sagemath.org/ticket/30663_