Goswin von Brederlow <goswin-...@web.de> writes: > Russ Allbery <r...@debian.org> writes: >> Goswin von Brederlow <goswin-...@web.de> writes:
>>> But you are right, if your suggestion is to undo this in prerm then >>> there will be a long delay between undoing and redoing. But if you >>> fully undo things then programs will still start, they just won't be >>> able to use hardware accelerated GL and fallback to software GL. >> No, that's not correct. libGL.so.1 would disappear, which means that >> any programs linked with that shared library would not be able to start >> at all. > *fully* undo. That means you delete the link, undo the diversion and > move the original libGL.so.1 back into place. So it would be there. But > as said there is no need to undo the diversion for an upgrade. Oh, I see what you're saying. Right. And if the user is removing the NVIDIA libGL libraries, having hardware-accelerated GL for NVIDIA cards go away is probably their intended action. > - nvidias prerm runs > - nvidias libGL.so.1 is removed by dpkg > - libGL.so.1 is now a dangling symlink > - dpkg still runs and does some bookkeeping and syncing > - nvidias postrm runs > If you remove the diversion in postrm then there is a window where the > link is dangling. The same window existing packages with diversions in > preinst/postrm do have. Removing the diversion in prerm avoids that > window but that only works with your link. > If you remove the diversion in postrm there probably won't be any > complaints but you could do it perfect in prerm. Ah, yes, good point. The NVIDIA package already installs its libGL under a different name than libGL.so.1.2 and handles the libGL.so symlink separately (via a trigger), so the only file affected by this is libGL.so.1. I like this idea of moving the handling of it to postinst, and I think all the other diversions for the libgl1-nvidia package can also be moved to postinst. Andreas, do you see anything about this that I'm missing that would cause problems? -- Russ Allbery (r...@debian.org) <http://www.eyrie.org/~eagle/> -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87sk35vq9c....@windlord.stanford.edu
