case $ID-$VERSION_ID in
freebsd-11|freebsd-12) sed "s/^/$PKG_FMT /" <<EOF
all devtest-
-all devtest IO::KQueue-
-all devtest IO::KQueue
+all devtest
v2essential
essential
essential devtest-
EOF
;;
debian-sid|debian-9|debian-10) sed "s/^/$PKG_FMT /" <<EOF
-all devtest-
all devtest
+all devtest Search::Xapian-
+all devtest-
v2essential
essential
essential devtest-
+EOF
+ ;;
+centos-7) sed "s/^/$PKG_FMT /" <<EOF
+v2essential devtest
+essential devtest
+all Search::Xapian-
EOF
;;
esac