these 2 derivations will be built:
  /nix/store/qwg7ri39bi01gn11fj8iqzfzm0wxn7wn-iets-0.1.0.drv
  /nix/store/rbiy7xk7y2ifqhpwc5pj4fiyzxwll9bf-iets-linttest.drv