these 2 derivations will be built:
  /nix/store/9ghgnpz51l9hfxvqz0bnwf4fvdvpj2yg-iets-release-0.2.0.drv
  /nix/store/768lgbw4q0p2xknxbnbfncmxybhn2af5-inputDerivation-effect-release.drv
building '/nix/store/9ghgnpz51l9hfxvqz0bnwf4fvdvpj2yg-iets-release-0.2.0.drv'...
building '/nix/store/768lgbw4q0p2xknxbnbfncmxybhn2af5-inputDerivation-effect-release.drv'...