these 3 derivations will be built:
  /nix/store/1yvvjac8qbw6mqfmgx28ihvzmcrpziin-source.drv
  /nix/store/698n4gi069hqz9w5imd29azps5qnhz1f-gno-2.5.1.drv
  /nix/store/lyqrkp0a57f8cax75676ic0ch4dk7wlm-check-gno.drv