Great catch! Another alternative - we could remove the tag altogether. Do we actually need a tag for that language? There are only 20 questions in the tag (including the wrongly tagged ones) and most of them are about software-installation. If they were about features of the language itself, or about platform-independent issues with using in it, they would be off-topic anyway.

Version tags are available (although some folks feel they should not be used at all) in the form 16.04 18.04 20.04 20.10 etc. Usually we have synonymised them so that xenial maps to 16.04 (attempts to use the former add the latter. We could do the same with groovy if we remove it from the java-related questions.

Great catch! Another alternative - we could remove the tag altogether. Do we actually need a tag for that language? There are only 20 questions in the tag (including the wrongly tagged ones) and most of them are about software-installation. If they were about features of the language itself, or about platform-independent issues with using in it, they would be off-topic anyway.

Version tags are available (although some folks feel they should not be used at all) in the form 16.04 18.04 20.04 20.10 etc. Usually we have synonymised them so that, for example, xenial maps to 16.04 (attempts to use the former add the latter). We could do the same with groovy if we remove it from the java-related questions.