these 2 derivations will be built:
  /nix/store/f1ja4m6p9a20a3hprwy3ikzadvpkal2b-iets-release-0.1.0.drv
  /nix/store/l457xcyj6ri5dhkbiyj5vyy5m75jl8qb-inputDerivation-effect-release.drv
building '/nix/store/f1ja4m6p9a20a3hprwy3ikzadvpkal2b-iets-release-0.1.0.drv'...
building '/nix/store/l457xcyj6ri5dhkbiyj5vyy5m75jl8qb-inputDerivation-effect-release.drv'...