this derivation will be built:
  /nix/store/0hjkx1l2a6fwxj71fw3fzss1zxgk3r5s-inputDerivation-effect-docs.drv
building '/nix/store/0hjkx1l2a6fwxj71fw3fzss1zxgk3r5s-inputDerivation-effect-docs.drv'...