these 3 derivations will be built:
  /nix/store/qxnqn4pb65dmnzr1flg44bq8kcm8r7p1-clan-cli-source.drv
  /nix/store/12limfi9r5havh4q62q0665n4kqnyz3p-clan-cli.drv
  /nix/store/wmvpxc5kzl8i1ljjy134180vrn7shs4w-nix-shell.drv