[bug#49412] [PATCH core-updates] gnu: libdrm: Update to 2.4.107

[John Kehayias]

> If you mean the 'when tests?' patch, then I'd send it to 
> 49412@debbugs.gnu.orgto keep the libdrm patches together (maybe as a v2 patch 
> series).  If you mean‘updating mesa to 21.1.1x’, then I'd send that patch to 
> guix-patches@gnu.org,as updating 'mesa' seems much more complicated than only 
> updating 'libdrm'(see reply by John Kehayias).

Just to follow up here, I think Mesa can be updated pretty simply too, as the 
original Mesa patch referenced also enabled libglvnd. I've followed up on both 
the original patch submission and on guix-devel (to gather feedback on moving 
things to libglvnd).