these 2 derivations will be built:
  /nix/store/6gcrbfyrk3ijqf1l58jm2b3anbk2sdyc-iets-0.1.0.drv
  /nix/store/5i8fbdnf2114s6nqpjmn4ad0lk2lg38h-iets-linttest.drv