I have see that the project homepage do not respond anymore:
http://jansi.fusesource.org/

I think that the homepage is now:
https://fusesource.github.io/jansi/

I see that jansi-native is marked as deprecated and is now part of jansi
(https://github.com/fusesource/jansi-native)
I think that here there is a new jansi version: 2.1.0
that include jansi-native

Ciao
Davide

Note: this is a simplified bug report that I use to report homepage
problems found at https://repology.org/repository/debian_testing/problems