Virtualisation dependency errors - anyone else getting this?

Hi all,

Running NixOS unstable, so I suppose this is related to that. But as of this morning I’ve been getting build failures relating to libvertd, qemu, and omvf. NixOS builds fine when I comment out my virtualisation section. But is anybody else getting these errors?

… virtualisation section of config.nix, FWIW …

virtualisation = {
libvirtd = {
enable = true;
qemu = {
swtpm.enable = true;
ovmf.enable = true;
ovmf.packages = [ pkgs.OVMFFull.fd ];
};
};
spiceUSBRedirection.enable = true;
};