this derivation will be built:
  /nix/store/sdhgspn522fvs62nw5w3nv54fknk3c7y-inputDerivation-effect-docs.drv
building '/nix/store/sdhgspn522fvs62nw5w3nv54fknk3c7y-inputDerivation-effect-docs.drv'...