these 3 derivations will be built:
  /nix/store/x19pnp9q6g01z5673cxx45zv4k4cskcj-clan-cli-source.drv
  /nix/store/858pixav4qf6pa6akqwyc0gkkxifrba9-clan-cli.drv
  /nix/store/2fkbxsz10brscskrqjchmhckfvn1jl6g-nix-shell.drv