Subject: [PATCH core-updates] gnu: mesa: Update to 21.1.4.

From: John Kehayias <[email-masked]>
Date: Fri, 02 Jul 2021 19:29:08 +0000

I can confirm this builds for me on different computers as well, and would be great to have updated in guix. This is a bigger version jump since the current version is more than 6 months old and upstream continues with frequent bug fix releases.