libglvnd abstracts away vendor-provided libGL. Currently, only Mesa and NVIDIA are supported. In future, multiple Mesa versions may co-exist. See review D25020 for the patch.
Can someone explain why exp-run hasn't been performed yet?
(In reply to Jan Beich from comment #1) According to the review the patch was not approved by maintainer.
(In reply to Antoine Brodin from comment #2) I'm disappointed in portmgr@ for facilitating the deadlock situation after x11@ said "it has to be thoroughly tested".
(In reply to Jan Beich from comment #3) Existing deadlock aside, this seems like an odd stance to take. If I'm maintainer of something that's worth doing an exp-run for, I likely will not approve of a patch until I also see the consequences of the patch on reverse dependencies. i.e. maybe I approve in principle, but I want to see that due diligence is done before putting that on paper. Antoine, do you have any numbers on how many exp-runs we end up not doing over some period of time because a maintainer doesn't approve of the patch? I think it makes sense to revise this, because I can't imagine this is saving us all that much, resource-wise.
(In reply to Kyle Evans from comment #4) I don't want to waste an exp-run if x11@ is going to reject the patch even if the exp-run is successfull. x11@ should speak up.