text: # for now, this is a duplicate of the same file from stl. need put this in some common dir
  import sys
  import os
  import warnings
  import platform
  
  # if not set - set it to default
  TREX_STL_EXT_PATH = os.environ.get('TREX_STL_EXT_PATH')
  
  # take default
  if not TREX_STL_EXT_PATH or not os.path.exists(TREX_STL_EXT_PATH):
      CURRENT_PATH        = os.path.dirname(os.path.realpath(__file__))
      TREX_STL_EXT_PATH  = os.path.normpath(os.path.join(CURRENT_PATH, os.pardir, os.pardir, 'external_libs'))
  if not os.path.exists(TREX_STL_EXT_PATH):
      # ../../../../external_libs
      TREX_STL_EXT_PATH   = os.path.normpath(os.path.join(CURRENT_PATH, os.pardir, os.pardir, os.pardir, os.pardir, 'external_libs'))
  if not os.path.exists(TREX_STL_EXT_PATH):
      raise Exception('Could not determine path of external_libs, try setting TREX_STL_EXT_PATH variable')
  
  # the modules required
  # py-dep requires python2/python3 directories
  # arch-dep requires ucs2/ucs4 and 32bit/64bit directories
  CLIENT_UTILS_MODULES = [ {'name': 'texttable-0.8.4'},
                           {'name': 'pyyaml-3.11', 'py-dep': True},
                           {'name': 'scapy-2.3.1', 'py-dep': True},
                           {'name': 'pyzmq-14.5.0', 'py-dep': True, 'arch-dep': True},
                           {'name': 'simpy-3.0.10'},
                          ]
  
  
  def generate_module_path (module, is_python3, is_64bit, is_ucs2):
      platform_path = [module['name']]
  
      if module.get('py-dep'):
          platform_path.append('python3' if is_python3 else 'python2')
  
      if module.get('arch-dep'):
          platform_path.append('ucs2' if is_ucs2 else 'ucs4')
          platform_path.append('64bit' if is_64bit else '32bit')
  
      return os.path.normcase(os.path.join(TREX_STL_EXT_PATH, *platform_path))
  
  
  def import_module_list(modules_list):
  
      # platform data
      is_64bit   = platform.architecture()[0] == '64bit'
      is_python3 = (sys.version_info >= (3, 0))
      is_ucs2    = (sys.maxunicode == 65535)
  
      # regular modules
      for p in modules_list:
          full_path = generate_module_path(p, is_python3, is_64bit, is_ucs2)
  
          if not os.path.exists(full_path):
              print("Unable to find required module library: '{0}'".format(p['name']))
              print("Please provide the correct path using TREX_STL_EXT_PATH variable")
              print("current path used: '{0}'".format(full_path))
              exit(1)
  
          sys.path.insert(1, full_path)
  
  
  
  
  
  import_module_list(CLIENT_UTILS_MODULES)
  