How to rebuild the _ext.cpp when developing?

[kawaho]

Sorry this is a really basic question. I am trying to add some features into _ext.cpp. How do I rebuild the package after modifying the file?

In the README.md, it says

bash python -m pip install '.[test]'

but I assume this is just for the first time building the package. I imagine there is a way to only recompile the changes I did in the .cpp files?

[matthewfeickert]

I am trying to add some features into _ext.cpp.

@kawaho Please open up an Issue (https://github.com/scikit-hep/fastjet/issues) that describes the features that you want to add, so these can get discussed in advance.

How do I rebuild the package after modifying the file?

Building happens during the install, so just install your modified version with

python -m pip install --upgrade .