--- wanderlust.install.orig	2014-05-17 00:19:50.026170542 +0200
+++ wanderlust.install	2014-05-17 00:21:23.596202508 +0200
@@ -1,3 +1,5 @@
+infodir=/usr/share/info
+
 post_install () {
 cat << EOF
 ==> Put this in your $HOME/.emacs file to enable Wanderlust
@@ -6,8 +8,15 @@
 (autoload 'wl-other-frame "wl" "Wanderlust on new frame." t)
 (autoload 'wl-draft "wl-draft" "Write draft with Wanderlust." t)
 EOF
+  [ -x usr/bin/install-info ] || return 0
+  install-info "$infodir/wl.info.gz" "$infodir/dir"
 }
 
 post_upgrade () {
   post_install $1
 }
+
+pre_remove() {
+  [ -x usr/bin/install-info ] || return 0
+  install-info --delete "$infodir/wl.info.gz" "$infodir/dir"
+}