<div id="comment:0"></div> see: - #29900 Meta-ticket: Fix optional and experimental packages for Sage 9.2 Downgrading two optional packages that fail to build on many platforms, as can be seen in https://github.com/mkoeppe/sage/actions/runs/296478189 Depends on #28711 CC: @jhpalmieri @dimpase @slel @simon-king-jena Component: **packages: optional** Author: **Matthias Koeppe** Branch/Commit: **[`674523c`](https://github.com/sagemath/sagetrac-mirror/commit/674523cf0bc34368e2aa5effb280c0dcf71f9808)** Reviewer: **Dima Pasechnik** _Issue created by migration from https://trac.sagemath.org/ticket/30349_