these 2 derivations will be built:
  /nix/store/jccw7p7ig5i5dqfg3agqmkgr5qyv3q05-iets-0.1.0.drv
  /nix/store/2khw9jj3sdfa60p6yv0ddn3q8krfyk9b-iets-linttest.drv