In my experience JRuby is way more viable than Jython ever was, one because Ruby native modules were more often thin wrappers, two because Ruby has sorta-standa

In my experience JRuby is way more viable than Jython ever was, one because Ruby native modules were more often thin wrappers, two because Ruby has sorta-standard in form of test suite (which AFAIK evolved from one that was necessary for ISO Ruby effort), and established somewhat case of using different implementations.. And C extensions never got as crazy as in python, and some major ones either made Java backends or switched from MRI embedding to FFI