cython>=0.28.1
scikit-build>=0.7.1
cmake
ninja

# we need wheel >= 0.31.0 to support Markdown long_description.
# Temporarily pin wheel version to 0.31.1 as 0.32 breaks scikit-build
# https://github.com/scikit-build/scikit-build/issues/360
wheel==0.31.1
