From #parabola:

16:54 < mtjm> fauno: does labs.parabola.nu support tagging of issues?
16:55 < mtjm> so e.g. the how to help page could have a link to a list of all open issues which need MIPS assembly knowledge to fix
16:56 < fauno> mmm maybe with a plugin
16:56 < mtjm> Ruby or C might be a better case
16:57 < fauno> https://github.com/friflaj/redmine_tagging