Hi! On Wed, 22 Aug 2018 20:33:00 +0200 Davyd McColl wrote: > The other day I installed Celestia for the entertainment of my son, who is > delighted with anything stellar / planetary. Celestia wouldn't start up, > and, long-story-short, I tracked down the issue to the symlinks: > > /usr/lib64/libGL.so > /usr/lib64/libGL.so.1 > > which ultimately point to > > /usr/lib64/libGL.so.1.2.0, > > provided by media-libs/mesa. Naturally, I assumed I'd made a mistake with > `eselect` at some point, so I checked with `eselect opengl list` and found > that, as expected, my selected opengl implementation was nvidia. Just in > case, I switched over to xorg-x11 (mesa) and back again, but this didn't > fix the problem. > > Manually redirecting these to /usr/lib64/opengl/nvidia/lib/libGL.so > (provided by x11-drivers/nvidia-drivers) works, however, of course, portage > doesn't know anything about this, so the update I received today for > media-libs/mesa reverted these symlinks back to pointing at mesa libs. > > So the questions I have are these: > 1) Am I reasonable in expecting `eselect opengl` to maintain these > symlinks? I feel like it's a reasonable expectation, but perhaps there's > just yet another thing I have to learn / understand.
No, eselect opengl works differently. It uses /etc/env.d to alter LDPATH and OPENGL_PROFILE environment variables. It also changes xorg.conf. So you may need to restart your X server and source /etc/profile in active shells for changes to take effect. > 2) Should I be logging a bug (against eselect, or perhaps celestia, since > this is the only app which seems to have suffered this fate -- games like > Torchlight 2 and utils like glxgears work just fine; glxinfo reports NVIDIA > extensions), or is there just something I've fundamentally missed or messed > up here? If glxinfo reports correct data and glxgears works fine, then this may be a bug and please report it. You may CC both celestia and opengl since right now it is not obvious which is the culprit. Best regards, Andrew Savchenko
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