Currently we are using scipy 0.17 from 2016 because later versions could include f90 and we don't know how to compile it.

However, I quickly looked at scipy git log, and the mean edit frequency of for fortran files in scipy is 6 years, so even if f90 is now accepted now, there was no active modernization effort from f77. Which means that later scipy versions could potentially be built, and we could update it. Latest version would be ideal so that we could contribute fixes upstream if needed.

Though the problem is that until dynamic linking is not resolved #240, if newer versions add additional modules that use LAPACK it will increase the binary size which is not desirable.