new_contents: dr_id = 'DR1'
  
  def install_and_import(package, url):
      # http://stackoverflow.com/questions/12332975/installing-python-module-within-code
      import importlib
      try:
          importlib.import_module(package)
      except ImportError:
          import pip
          pip.main(['install', '-e', package, '-t', 'GAS_{dr}'.format(dr=dr_id)])
      finally:
          globals()[package] = importlib.import_module(package)
  
  
  install_and_import('GAS', 'git+https://github.com/GBTAmmoniaSurvey/GAS.git@c9b5ab260b1df81f823edbe64de4230a0f67dd09#egg=GAS')
  #install_and_import('GAS', 'git+https://github.com/GBTAmmoniaSurvey/GAS.git@GAS_{dr}#egg=GAS'.format(dr=dr_id))
  
  GAS.run_grid_region.grid_B1()
  GAS.run_grid_region.grid_B18()
  GAS.run_grid_region.grid_B59()
  GAS.run_grid_region.grid_Cepheus()
  GAS.run_grid_region.grid_IC348()
  GAS.run_grid_region.grid_IC5146()
  GAS.run_grid_region.grid_L1451()
  GAS.run_grid_region.grid_L1455()
  GAS.run_grid_region.grid_L1688()
  GAS.run_grid_region.grid_NGC1333()
  GAS.run_grid_region.grid_OrionA()
  GAS.run_grid_region.grid_OrionB()
  GAS.run_grid_region.grid_SerAqu()
  
subject: add a DR1 installer/runner