new_contents: import os
  import yaml
  import girder_client
  
  rsl_page_root = os.environ.get(
      'RSL_PAGE_ROOT', '/home/xarth/codes/rensimlab/rensimlab.github.io')
  
  collectionPath = '/collection/Renaissance Simulations'
  gc = girder_client.GirderClient(apiUrl='https://girder.rensimlab.xyz/api/v1')
  
  server_paths = yaml.load(
      open(os.path.join(rsl_page_root, '_data', 'notebooks.yaml'), 'r'))
  simulation_data = yaml.load(
      open(os.path.join(rsl_page_root, '_data', 'simulations.yaml'), 'r'))
  
  for sim_name, sim in simulation_data.items():
      for ds in sim:
          ds['on_rsl'] = False
      listing = gc.get('/folder/{}/listing'.format(server_paths[sim_name]))
      for folder in listing['folders']:
          try:
              pos = next((i for i, _ in enumerate(sim)
                          if folder['name'] == _['snapshot']))
              sim[pos]['on_rsl'] = folder['_id']
          except StopIteration:
              pass
  yaml.dump(
      simulation_data,
      open(os.path.join(rsl_page_root, '_data', 'simulations.yaml'), 'w'))
  
  rafts = [
      {'id': _['_id'], 'name': _['name'], 'description': _['description']}
      for _ in gc.get('/raft')
  ]
  yaml.dump(
      rafts,
      open(os.path.join(rsl_page_root, '_data', 'rafts.yaml'), 'w'))
  
subject: Add script for regenerating yaml files