[Warning] Ebuild 9999 uses unbracketed variable '$PV'. Use '${PV}' instead.
[Error] Ebuild mpv-plugin/thumbfast/thumbfast-9999.ebuild inherits eclasses conditionally, which is not permitted. All eclass inherits must be unconditional.
[Warning] Ebuild 9999 has a line exceeding 80 positions on line 17.
[Warning] Ebuild 9999 is missing the SLOT variable.
[Error] Repository is missing a repo-name in metadata/layout.conf or profiles/repo_name
[Error] Missing or unparsable Manifest file
[Error] Invalid or missing metadata.xml: file does not exist
Note: category 'mpv-plugin' is not in the main gentoo categories list