def parseCondaForOS(libs,opSys):
  """
    Modifies the list of Conda for a particular operating system.
    @ In, libs, list, list of libraries as (lib,version)
    @ In, opSys, string, name of operating system (mac, windows, linux)
    @ Out, libs, updated libs list
  """
  if opSys == 'windows':
    pass # nothing special to do currently
  elif opSys == 'mac':
    pass # nothing special to do currently
  elif opSys == 'linux':
    # add noMKL libraries to prevent Intel crash errors
    libs.append( ('nomkl'  ,'') )
    libs.append( ('numexpr','') )
  return libs