this derivation will be built:
  /nix/store/s1izinkm04f4yl2xblq6bwb2p1d5hhp8-inputDerivation-effect-docs-pages.drv
building '/nix/store/s1izinkm04f4yl2xblq6bwb2p1d5hhp8-inputDerivation-effect-docs-pages.drv'...