this derivation will be built:
  /nix/store/8apr7hhvkzspgl05g2hxhbmwgghqnjyb-inputDerivation-effect-docs.drv
building '/nix/store/8apr7hhvkzspgl05g2hxhbmwgghqnjyb-inputDerivation-effect-docs.drv'...