these 2 derivations will be built:
  /nix/store/7ffrv3rk6cgmg3a2qwppqf25f02kx9vj-iets-release-0.1.0.drv
  /nix/store/ykq6jqrrdagzkvc5b0qlc0z630zkn81b-inputDerivation-effect-release.drv
building '/nix/store/7ffrv3rk6cgmg3a2qwppqf25f02kx9vj-iets-release-0.1.0.drv'...
building '/nix/store/ykq6jqrrdagzkvc5b0qlc0z630zkn81b-inputDerivation-effect-release.drv'...