如何安装特定版本的 Mesa？

Question

我需要为 Unity3D 安装 mesa 20.x。使用 ubuntu 20.04。

我尝试了两个 ppa（ppa:kisak/kisak-mesa 和 oxxx），但它们的版本比 ubuntu 更新。我该怎么办？

查看错误报告https://issuetracker.unity3d.com/issues/linux-editor-crashes-at-assert-fail-base-dot-cold-when-opening-a-project

我尝试过sudo apt-get install -f libgl1-mesa-dev=20.0.4-2ubuntu1 但收到以下消息：

The following packages have unmet dependencies:
 libgl1-mesa-dev : Depends: libgl-dev but it is not going to be installed
                   Depends: libglvnd-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

但是 libglvnd-dev 已经安装

libglvnd-dev is already the newest version (1.3.2-1~ubuntu0.20.04.1).