In $NIX_PATH, use nixpkgs=...

This is required by the "nix" command to find Nixpkgs.

Changed files
+1 -1
nixos
modules
services
+1 -1
nixos/modules/services/misc/nix-daemon.nix
···
nixPath = mkOption {
type = types.listOf types.str;
default =
-
[ "/nix/var/nix/profiles/per-user/root/channels/nixos"
+
[ "nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs"
"nixos-config=/etc/nixos/configuration.nix"
"/nix/var/nix/profiles/per-user/root/channels"
];