#nix #nixos #language #programming #functional
They are wrapped by <> like <nixpkgs> which transform into /nix/var/nix/profiles/per-user/root/channels/nixpkgs and are dependents builtins.nixPath. Another example <nixpkgs/lib> = /nix/var/nix/profiles/per-user/root/channels/nixpkgs/lib