these 2 derivations will be built:
  /nix/store/4n9jsxvbar7vbqsw08r4q3nzrjknkln2-iets-0.1.0.drv
  /nix/store/50mhmn3h1kp7vlxly96yajz5ga2c0wj2-iets-linttest.drv