Index: svnadmin/hooks/scripts/detect-filename.sh
===================================================================
--- svnadmin/hooks/scripts/detect-filename.sh	(revision 443729)
+++ svnadmin/hooks/scripts/detect-filename.sh	(revision 443730)
@@ -1,31 +1,40 @@
 #!/bin/sh
 # pre-commit hook to detect files containing not allowed characters
 # $FreeBSD$
 
 REPO=$1
 TXN=$2
 
 SVNLOOK=/usr/local/bin/svnlook
 
 # Check arguments
 if [ -z "$REPO" -o -z "$TXN" ]; then
   echo "Syntax: $0 path_to_repos txn_id" >&2
   exit 1
 fi
 
 # Approved by portmgr gets a free pass
 $SVNLOOK log -t "$TXN" "$REPO" | grep -q 'portmgr' && exit 0
 
 # We scan through the transaction diff, looking for files with colon in the name
 if $SVNLOOK changed -t "$TXN" "$REPO" | grep -q -E '^A.*[:@]'; then
   echo "Some files in your commit have a colon (:) or (@) in the name" >&2
   echo "which is not allowed. Use _ instead for patches." >&2
   echo "Or even better, generate your patches with make makepatch." >&2
   echo "For further information please read:" >&2
   echo "http://www.freebsd.org/doc/en/books/porters-handbook/slow-patch.html" >&2
   echo "Please fix this and try committing again." >&2
   exit 1
 fi
 
+# Look for new py3 ports
+if $SVNLOOK changed -t "$TXN" "$REPO" | grep -q -E '^A.*/py3'; then
+  echo "Please do not add new py3 slave ports at this time.  FLAVORS" >&2
+  echo "support is coming soon which will remove the need for these kind of" >&2
+  echo "slave ports.  Having new ones come in slows down development for" >&2
+  echo "FLAVORS support." >&2
+  exit 1
+fi
+
 # No files with invalid chars were detected
 exit 0