[zaikunzhang]

I guess one of the major issues is the compilation and packaging of the Fortran code. It is also my experience when developing PDFO ( https://www.pdfo.net/ ), the predecessor of PRIMA.

This is also reflected by the following comment at https://github.com/scipy/scipy/issues/18118#issuecomment-155...

> The real maintenance burden is the compilation and the packaging not the code itself that we are carrying around.