[Error] Ebuild 1 uses '${D}' in 'src_compile'. It must be used only in src_install and pkg_preinst.
[Error] Ebuild 1 uses an obsolete EAPI '0'. EAPIs 0 to 4 are obsolete and must no longer be used.
[Notice] Ebuild 1 has an invalid header. It should start with a valid copyright line (e.g., '# Copyright YEARS MAIN-CONTRIBUTOR') and the GPLv2 distribution text followed by an empty line.
[Error] Manifest entry for unused DIST file 'groff-utf8.tar.gz'
[Error] Repository is missing a repo-name in metadata/layout.conf or profiles/repo_name
[Error] Invalid or missing metadata.xml: open sys-apps/groff-utf8/metadata.xml: file does not exist