This package uses variables banned in some scopes. This may stop working in future versions of Portage. $ pkgcheck scan -k VariableScope mail-mta/courier mail-mta/courier VariableScope: version 1.1.5-r2: variable 'D' used in 'src_configure', line 105
This was fixed a while ago: https://gitweb.gentoo.org/repo/gentoo.git/commit/mail-mta/courier?id=1a05995972eb11110a4ae5321e40593eb22288cd