Super helpful, thanks! The NumPy page on the migration has some details on the differences: > ... [Here] are the numpy.distutils features that are not pres

Super helpful, thanks! The NumPy page on the migration has some details on the differences: > ... [Here] are the numpy.distutils features that are not present in setuptools: * Nested setup.py files * Fortran build support * BLAS/LAPACK library support (OpenBLAS, MKL, ATLAS, Netlib LAPACK/BLAS, BLIS, 64-bit ILP interface, etc.) * Support for a few other scientific libraries, like FFTW and UMFPACK * Better MinGW support * Per-compiler build flag customization (e.g. -O3 and SSE2 flags are default) * a simple user build config system, see site.cfg.example * SIMD intrinsics support * Support for the NumPy-specific .src templating format for .c/.h files https://numpy.org/doc/stable/reference/distutils_status_migration.html https://numpy.org/doc/stable/reference/distutils_status_migr...