--- Portfile.orig	2009-11-14 15:10:00.000000000 -0800
+++ Portfile	2010-01-01 15:27:13.000000000 -0800
@@ -86,6 +86,11 @@
     build.args-append   CREATEPROTO=mbxproto
 }
 
+# Variant to set the default for creating new mailboxes to "mix" format
+variant mix description { default new mailboxes to "mix" format } {
+    build.args-append   CREATEPROTO=mixproto
+}
+
 # Variant to set the default mail subdirectory name to "Mail"
 variant subdir description { set "Mail" as subdirectory name } {
     patchfiles-append   patch-env_unix.c.diff