Doesn't look like Gentoo was ever supported (or perhaps very, very long time ago) and indeed metadata.json hasn't indicated support for a long time now, but line ~40 in package.pp has a case statement not commented out that relates to Gentoo, Portage and Resource 'package_use'.
please remove or otherwise comment out to keep Validation from showing spurious errors.
Doesn't look like Gentoo was ever supported (or perhaps very, very long time ago) and indeed metadata.json hasn't indicated support for a long time now, but line ~40 in package.pp has a case statement not commented out that relates to Gentoo, Portage and Resource 'package_use'.
please remove or otherwise comment out to keep Validation from showing spurious errors.