diff --git a/stack.sh b/stack.sh
index f3d8d44..d095063 100755
--- a/stack.sh
+++ b/stack.sh
@@ -668,6 +668,18 @@
 # Do the ugly hacks for borken packages and distros
 $TOP_DIR/tools/fixup_stuff.sh
 
+
+# Extras Pre-install
+# ------------------
+
+# Phase: pre-install
+if [[ -d $TOP_DIR/extras.d ]]; then
+    for i in $TOP_DIR/extras.d/*.sh; do
+        [[ -r $i ]] && source $i stack pre-install
+    done
+fi
+
+
 install_rpc_backend
 
 if is_service_enabled $DATABASE_BACKENDS; then