old_contents: """
      Setup script to build a Mac app
  """
  from setuptools import setup
  import DataLoader.readers 
  import os
  
  #Data reader data files
  
  RESOURCES_FILES = os.path.join(DataLoader.readers.get_data_path(),'defaults.xml')
  
  # Locate libxml2 library
  lib_locs = ['/usr/local/lib', '/usr/lib']
  libxml_path = None
  for item in lib_locs:
      libxml_path_test = '%s/libxml2.2.dylib' % item
      if os.path.isfile(libxml_path_test): 
          libxml_path = libxml_path_test
  if libxml_path == None:
      raise RuntimeError, "Could not find libxml2 on the system"
  
  APP = ['PrView.py']
  DATA_FILES = ['images', 'test', 'plugins']
  OPTIONS = {'argv_emulation': True,
             'packages': ['lxml'],
             'iconfile': 'images/ball.icns',
             'frameworks':[libxml_path],
             'resources': RESOURCES_FILES
             }
  
  setup(
      app=APP,
      data_files=DATA_FILES,
      include_package_data= True,
      options={'py2app': OPTIONS},
      setup_requires=['py2app'],
  )
  
new_contents: """
      Setup script to build a Mac app
  """
  from setuptools import setup
  import sans.dataloader.readers 
  import os
  
  #Data reader data files
  
  RESOURCES_FILES = os.path.join(sans.dataloader.readers.get_data_path(),'defaults.xml')
  
  # Locate libxml2 library
  lib_locs = ['/usr/local/lib', '/usr/lib']
  libxml_path = None
  for item in lib_locs:
      libxml_path_test = '%s/libxml2.2.dylib' % item
      if os.path.isfile(libxml_path_test): 
          libxml_path = libxml_path_test
  if libxml_path == None:
      raise RuntimeError, "Could not find libxml2 on the system"
  
  APP = ['PrView.py']
  DATA_FILES = ['images', 'test', 'plugins']
  OPTIONS = {'argv_emulation': True,
             'packages': ['lxml'],
             'iconfile': 'images/ball.icns',
             'frameworks':[libxml_path],
             'resources': RESOURCES_FILES
             }
  
  setup(
      app=APP,
      data_files=DATA_FILES,
      include_package_data= True,
      options={'py2app': OPTIONS},
      setup_requires=['py2app'],
  )
  
subject: update dataloader import