these 3 derivations will be built:
  /nix/store/8lxkl17b4f0wc4vzw72nf47fk84zqlga-clan-cli-source.drv
  /nix/store/vn1ai8cy8fvp91g6fpfb7r0bpk5ybka2-clan-cli.drv
  /nix/store/1zhl1i7gc26nbkavham3hjsixj8brd5g-nix-shell.drv