# Pastebin ufeuoOY6
»» ~/Projects/nixpkgs
 ♖ nix repl                  ⚡(master) pts/10 12:48:47
Welcome to Nix version 2.3. Type :? for help.

nix-repl> :l ./nixos                   
Added 6 variables.

nix-repl> config.system.build.isoImage
error: attribute 'isoImage' missing, at (string):1:1

nix-repl>