New issue by Eluminae on void-packages repository

https://github.com/void-linux/void-packages/issues/16104

Description:
Hello there.

I'm working on https://github.com/void-linux/void-packages/pull/15889 and I'm stuck on this.

Some distros can't compile ruby-jaro_winkler. The ruby-devel dependency seems to be enough for some distros but not for others.

What am I missing ?

It seems the mkmf lib is provided by ruby-devel.

```
$ sudo xbps-query -f ruby-devel | grep mkmf
/usr/lib/ruby/2.6.0/mkmf.rb
```