this derivation will be built:
  /nix/store/fvqxa0a3hx8kmkx71wwk0m0hgrf5n57x-inputDerivation-effect-docs.drv
building '/nix/store/fvqxa0a3hx8kmkx71wwk0m0hgrf5n57x-inputDerivation-effect-docs.drv'...