This starts to fix the scripts so that they load from /usr/lib/crosutils

build_gpt.sh

 #!/bin/bash
 #
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-#
-# Load common constants.  This should be the first executable line.
-# The path to common.sh should be relative to your script's location.
-. "$(dirname "$0")/common.sh"
+
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
+  local path
+
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
+
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
 
 # Load functions and constants for chromeos-install
-. "$(dirname "$0")/chromeos-common.sh"
+[ -f /usr/lib/installer/chromeos-common.sh ] && \
+  INSTALLER_ROOT=/usr/lib/installer || \
+  INSTALLER_ROOT=$(dirname "$(readlink -f "$0")")
+
+. "${INSTALLER_ROOT}/chromeos-common.sh" || \
+  die "Unable to load chromeos-common.sh"
 
 # Script must be run inside the chroot.
-restart_in_chroot_if_needed $*
+restart_in_chroot_if_needed "$@"
 
 get_default_board
 
 # Flags.
 DEFINE_string arch "" \
   "The target architecture (\"arm\" or \"x86\")."
 DEFINE_string board "$DEFAULT_BOARD" \
   "The board to build an image for."
 DEFINE_integer rootfs_partition_size 1024 \
   "rootfs parition size in MBs."
@@ skipping 117 matching lines @@
 $sudo dd if=${ROOTFS_IMG} of=${OUTDEV} conv=notrunc bs=512 \
     seek=${START_ROOTFS_A}
 
 echo "Copying EFI system partition..."
 $sudo dd if=${ESP_IMG} of=${OUTDEV} conv=notrunc bs=512 seek=${START_ESP}
 
 # Clean up temporary files.
 if [[ -n "${MBR_IMG:-}" ]]; then
   rm "${MBR_IMG}"
 fi