I am on Archlinux, and jruby came from Archlinux repo. JRuby Version:
```
$ jruby --version 
jruby 9.2.14.0 (2.5.7) 2020-12-08 ebe64bafb9 OpenJDK 64-Bit Server VM 25.275-b01 on 1.8.0_275-b01 +jit [linux-x86_64]
```