these 2 derivations will be built:
  /nix/store/mqfbns7fhvwgp2vqnafx66s9gy3gjwgc-iets-0.1.0.drv
  /nix/store/2pzcpcx2w2xllzvr7gh3s7lxryjv4ka2-iets-linttest.drv