these 2 derivations will be built:
  /nix/store/wsj3i3z58rjd0lg1v489kvnm47n3qc0w-iets-0.1.0.drv
  /nix/store/cgw2xvbsivn1fxlv1f2l4w36akrc9d5n-iets-linttest.drv