these 2 derivations will be built:
  /nix/store/2csq5hk0ipwdngmyhc5vfig7j8wrs3jk-iets-0.1.0.drv
  /nix/store/45awcghlbxbw71l4k2czv9ap2nc1gm9w-iets-linttest.drv