maintainer-feedback requested: [Bug 256388] graphics/libepoxy: fix gl=libglvnd,mesa-* and X11=off

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-x11 (Nobody)
<x11 at FreeBSD.org> for maintainer-feedback:
Bug 256388: graphics/libepoxy: fix gl=libglvnd,mesa-* and X11=off
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256388



--- Description ---
1.5.8 reverted two commits that caused regressions under certain conditions for
Xorg, but regressed Wayland-only environments where libGL does not exist and
OpenGL is provided by libOpenGL instead.

Fix Wayland-only environments by making a reverted patch conditional when
X11=off.

The current 1.5.8 in ports breaks at least www/webkit2-gtk3 for libglvnd and
Wayland-only:

Couldn't open libGL.so.1: Shared object "libGL.so.1" not found