hdbscan dependency on windows systems problematic

[jc-healy]

Hi gang,

I tried getting our stuff running on a windows box this weekend. We have a pip hdbscan dependency in thisnotthat.
Unfortunately there is a binary compile issue with our cython.
error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
[end of output]
ERROR: Could not build wheels for hdbscan, which is required to install pyproject.toml-based projects

Just flagging this for future versions of us to think about and for other users to see to find an easy workaround which is to install hdbscan from conda-forge before pip installing thisnotthat.

[jc-healy]

on windows use:
conda install -c conda-forge hdbscan
pip install thisnotthat