We have found ourselves in a situation where it would be nice to be able to switch a project's scripting language. Ideally this swould be a process where scripts and keyword tests would be automatica...
I haven't tested this because we are in the middle of a project but if you to go Tools >Options>General>Project, you can change the default language to the ones that are available.
I don't know how effective this is but it's worth a try.