this derivation will be built:
  /nix/store/dcmigz2y7wsc1j0pq7bv22kf9ym40k6r-inputDerivation-effect-docs.drv
building '/nix/store/dcmigz2y7wsc1j0pq7bv22kf9ym40k6r-inputDerivation-effect-docs.drv'...