new_contents: import simtk.openmm as mm
  import os
  import os.path
  import re
  import conda.api
  import conda.config
  
  
  c1 = re.compile('([a-zA-Z0-9 ]*) ([\S]*): dlopen\(([\S]*), ([0-9]*)\): Library not loaded: ([\S]*)([\s]*)Referenced from: ([\S]*)([\s]*)Reason: ([a-zA-Z0-9 ]*)')
  subdirs = ['DIR', 'PLUGIN_DIR', 'LIB_PATH']
  openmm_envs = [env for env in os.environ if 'openmm' in env.lower()]
  err = []
  
  if not os.path.isdir(mm.Platform.getDefaultPluginsDirectory()):
      err += ['The default Plugin path "{0}" does not exist.'.format(
          mm.Platform.getDefaultPluginsDirectory()
          )]
  
  # for env in openmm_envs:
  #     if 'dir' in env.lower() or 'path' in env.lower():
  #         path = os.environ[env]
  #         if not os.path.isdir(path):
  #             err += ['Error in environment variable "{0}": Path "{1}" does not exist!'.format(env, path)]
  
  for sub in subdirs:
      env = 'OPENMM_' + sub
      if env not in os.environ:
          err += ['Needed environment variable "{0}" not set!'.format(env)]
      else:
          path = os.environ[env]
  
          if not os.path.isdir(path):
              err += ['Error in environment variable "{0}": Path "{1}" does not exist!'.format(env, path)]
          else:
              files = [f for f in os.listdir(path) if os.path.isfile(os.path.join(path, f))]
              okay = False
              for f in files:
                  if 'openmm' in os.path.join(path, f).lower():
                      okay = True
  
              if not okay:
                  err = ['Folder "{0}" in environment variable "{1}" does not contain files that are openmm specific. Check if the path is correct!'.format(path, env)]
  
  for s in mm.Platform.getPluginLoadFailures():
      res = c1.search(s)
      groups = res.groups()
      if not os.path.isfile(groups[1]):
          err += ['While loading a dynamic library the requested file "{0}" could not be found!'.format(groups[1])]
      if not os.path.isfile(groups[2]) and groups[1] != groups[2]:
          err += ['While loading a dynamic library the requested file "{0}" could not be found!'.format(groups[1])]
  
  if not err:
      print 'No apparent errors detected'
  else:
      print 'The following errors have been detected'
      for e in err:
          print e
  
  
  print 'Found the following installed platforms'
  
  possible_platforms = ['Reference', 'CPU', 'OpenCL', 'CUDA']
  
  platforms = []
  
  for pf_idx in range(mm.Platform.getNumPlatforms()):
      pf = mm.Platform.getPlatform(pf_idx)
      platforms += [(pf.getName(), pf.getSpeed(), '{0:20s} : {1:3.0f} x'.format(pf.getName(), pf.getSpeed()))]
  
  for pf in sorted(platforms, key=lambda x : x[1]):
      print pf[2]
  
  if 'CUDA' not in [pf[0] for pf in platforms]:
      print 'CUDA not working. If your machine has an NVidia graphics card make sure you have CUDA SDK Toolkit 7.0 and the CUDA Drivers installed.'
  
  if 'CPU' not in [pf[0] for pf in platforms]:
      print 'CPU not working. This means probably that your Plugin directory is not set correctly. Check the above error messages.'
  
  if err:
      conda_dir = conda.config.default_prefix
      pkgs_dir = conda.config.pkgs_dirs[0]
  
      for d in conda.config.pkgs_dirs:
          for f in os.listdir(d):
              if f[0] !='_' and f[-4:] != '.txt' and f[-4:] != '.bz2':
                  vals = f.split('-')
                  if len(vals) >= 3:
                      version = vals[-2]
                      last = vals[-1].split('_')
                      name = '-'.join(vals[0:-2])
  
                      sub_ver = last[-1]
                      if len(last) > 1:
                          specs = re.findall('([a-zA-z]+[0-9]+)', last[0])
  
                      path = os.path.join(d,f)
  
                      if name == 'openmm':
                          txt = """
  # PATHS for OPENMM
  export OPENMM_DIR="%s"
  export OPENMM_PLUGIN_DIR="${OPENMM_DIR}/lib/plugins"
  export OPENMM_INCLUDE_PATH="${OPENMM_DIR}/include"
  export OPENMM_LIB_PATH="${OPENMM_DIR}/lib"
                          """
  
                          print "To fix the environment variables you could try adding the following passage to the end of your .bashrc"
                          print txt % path
  
subject: add openmm helper