From https://pypi.org/project/zfpy/#files > No source distribution files available for this release.See tutorial on [generating distribution archives](https://packaging.python.org/tutorials/packaging-projects/#generating-distribution-archives). https://packaging.python.org/en/latest/tutorials/packaging-projects/#generating-distribution-archives Basically it seems to boil down to ``` python3 -m pip install --upgrade build python3 -m build ``` There is also a reference for help here: https://github.com/LLNL/zfp/issues/210#issuecomment-2462855522