these 2 derivations will be built:
  /nix/store/j7pzmk6n6wzdnlc3g5xhwzlgprj3j463-iets-0.1.0.drv
  /nix/store/4v4q4kap0ckzscqf3i5c88xag66bfcl0-iets-linttest.drv