Unsuccessful Installation

ERROR: bleach 1.5.0 has requirement html5lib!=0.9999,!=0.99999,<0.99999999,>=0.999, but you'll have html5lib 1.0b8 which is incompatible.

ERROR: Cannot uninstall 'tornado'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

Start by reproducing the installation from the quickstart and inspect its setup instructions for the Python dependency versions shown in the errors. Determine whether the bleach/html5lib conflict and distutils-installed tornado failure are still reproducible; done means a verified installation path without these errors.

索引モデルが issue の本文から書いたものです。