+ XWM

env variable to set x windowm manager

dots/xorg/.xinitrc

@@ -32,5 +32,10 @@ if [ -d /etc/X11/xinit/xinitrc.d ] ; then
  unset f
 fi
 
-exec i3
-#exec qtile start
+if [ ${XWM} == "i3" ] ; then
+    exec i3
+elif [ ${XWM} == "qtile" ] ; then
+    exec qtile start
+else
+    echo "error: unknown environment variable XWM: '${XWM}'"
+fi