Nixpkgs: libvirt is too old for qemu in unstable
Currently, qemu version is 4.2.0 and libvirt is 5.4.0. As I've already mentioned here there are some incompatibilities between qemu >= 4.1 and libvirt < 5.6.0. In some cases it may significantly affect performace (e.g. typical windows vm with vfio).
The latest libvirt version is 6.0.0. So, I think it's time to upgrade.
Unfortunately, it seems that something has changed in libvirt build process and just changing version/hash in existing derivation is not enough.
/cc @fpletz @globin (libvirt maintainers)
wedens
All 2 comments
Turns out Nix was adding --disable-dependency-tracking flag which caused weird build failures.
After adding dontAddDisableDepTrack = true and some other small tweaks, it builds.
I'll try to open a PR myself this week after I test it. I won't be able to test it on Darwin, though.
(apparently autotools will be replaced with meson soon in libvirt)
wedens
on 26 Feb 2020
This issue has been mentioned on NixOS Discourse. There might be relevant details there:
nixos-discourse
on 9 Mar 2020
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Most helpful comment
Turns out Nix was adding
--disable-dependency-trackingflag which caused weird build failures.After adding
dontAddDisableDepTrack = trueand some other small tweaks, it builds.I'll try to open a PR myself this week after I test it. I won't be able to test it on Darwin, though.
(apparently autotools will be replaced with meson soon in libvirt)