|Subject:||Should not depend on an Alt:: module|
The concept of Alt:: modules may work for individual users, but it's problematic if it's used as a dependency --- one cannot later distinguish if the real module or the Alt:: module is in use, e.g. in CPAN Testers reports. If you want to get rid of the Math::Pari dependency, then you can do this optional, e.g. with an additional Makefile.PL option. But the default should be to use Crypt::RSA instead of Alt::Crypt::RSA::BigInt.