[bug#70178] Request for merging "mesa-updates" branch

[John Kehayias]

Hi Guix,

I submitted a bunch of patches to mesa-updates a few days ago. From what I can 
tell things have gone well on x86_64, with most of the "new" failures listed 
are compared to previous mesa-updates and are ones broken on master too. A few 
failed from some time issue on hydra 128. And a few were legitimate failures 
which I have fixed. I'll go through again and make sure I didn't miss anything. 
I've been using this branch locally for a few things without issues so far.

So...I'm guessing the main thing is to wait for non-x86 coverage. Is there a 
way to see that on Bordeaux? As always, please report any issues, but hopefully 
this will be good to go once builds are done.

John