
At the moment, it's not possible to override the libvirtd package used without supplying a nixpkgs overlay. Adding a package option makes libvirtd more consistent and allows enabling e.g. ceph and iSCSI support more easily.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.