#!/bin/bash
sed_cmd(){
   for p in $PURGE_LIST; do
      echo "/^${p}/d;"
   done
}

PURGE_DIR="chroot/etc/live-installer/purge-packages"
SRC_MANIFEST="binary/casper/filesystem.manifest"
TARGET_MANIFEST="binary/casper/filesystem.manifest-desktop"
[ ! -d "$PURGE_DIR" ] || PURGE_LIST="`find ${PURGE_DIR}  -xtype f -exec cat {} \; |sort -u |tr '\n' ' '`"
if [ -f "$SRC_MANIFEST" ] ; then
   sed_cmd |sed -f - "$SRC_MANIFEST" > "$TARGET_MANIFEST"
fi
exit 0