Comment 35 for bug 2023322

(In reply to Michael Catanzaro from comment #22)
> BTW, this test will only work if Arch actually uses glvnd, but I think it
> does based on this old news article:
> https://archlinux.org/news/mesa-with-libglvnd-support-is-now-in-testing/.
> Would be helpful to confirm that for certain.

Yes, Arch has been using libglvnd for a good while, and it's the
provider chosen by default for the “libgl” virtual package:

  https://archlinux.org/packages/extra/x86_64/libglvnd/