this derivation will be built:
  /nix/store/1zq1izlkvq22dzv4rh2mc59vyg5qpfwf-inputDerivation-effect-docs-pages.drv
building '/nix/store/1zq1izlkvq22dzv4rh2mc59vyg5qpfwf-inputDerivation-effect-docs-pages.drv'...