This package uses a deprecated Go eclass. It must be migrated to go-module.eclass. Fixing this does not require a revbump as it'll already be successfully installed. $ pkgcheck scan -k DeprecatedEclass mail-filter/postforward mail-filter/postforward DeprecatedEclass: version 1.1.0: uses deprecated eclass: golang-build (migrate to go-module.eclass) DeprecatedEclass: version 1.1.1: uses deprecated eclass: golang-build (migrate to go-module.eclass)
Upstream has not moved to go modules.