Error when install on windows

[spasaria]

Hi everyone,
when i try to install bertopic on windows (pip install bertopic) i get an error. The problem arises on this line: " Building wheels for collected packages: hdbscan".
The next line is: Building wheel for hdbscan (PEP 517) ... error
...
ERROR: Failed building wheel for hdbscan
Failed to build hdbscan
ERROR: Could not build wheels for hdbscan which use PEP 517 and cannot be installed directly.

I tried to use different python version (3.5 - 3.6 - 3.7) but nothing has changed.
Did someone have the same problem and solved it?
Thank you all,

Andrea.

[MaartenGr]

If I am correct, there should be the following error/message prior to the error you encounter, namely:
"error: command 'gcc' failed with exit status 1"

There are several things that you can do to fix this error:

• You do not have a C++ compiler installed which can be fixed by downloading Installing Visual C++ Build Tools
• Install HDBSCAN via conda/miniconda: conda install -c conda-forge hdbscan
• Finally, there is a thread here which discusses similar issues in detail

Hopefully, the above will help you out a bit!

[spasaria]

Thank you @MaartenGr for the precious help. I installed c++ compiler and then installation is successful completed.
Sincerely,

Andrea.

[TobiasKlm]

Just as a sidenote: if you're having troubles installing the visual C++ Build Tools, this did the job for me https://github.com/bycloudai/InstallVSBuildToolsWindows