<div id="comment:0"></div> Implements #24024 + #22509 for the optional package coxeter3. CC: @tscrim Component: **packages: optional** Keywords: **destdir coxeter3** Author: **Erik Bray** Branch/Commit: **[`2a807f8`](https://github.com/sagemath/sagetrac-mirror/commit/2a807f8163d7b34af8c72e8f96f13d337bbb2947)** Reviewer: **Travis Scrimshaw** _Issue created by migration from https://trac.sagemath.org/ticket/29150_