This package uses variables banned in some scopes. This may stop working in future versions of Portage. $ pkgcheck scan -k VariableScope dev-libs/libpqxx dev-libs/libpqxx VariableScope: version 7.1.2: variable 'EROOT' used in 'src_test', lines 40, 43, 44 VariableScope: version 7.2.1: variable 'EROOT' used in 'src_test', lines 40, 43, 44 VariableScope: version 7.3.0: variable 'EROOT' used in 'src_test', lines 40, 43, 44 VariableScope: version 7.4.1: variable 'EROOT' used in 'src_test', lines 40, 43, 44