text: from pathlib import Path
  import site
  
  myPackagePath = Path(__file__).parent.absolute()
  
  pathspec = r"""
  # Generated by GST's installer (install_GST.py)
  # In the lines below, list the paths where Python should look for
  # GateSetTomography-supplied modules, one directory per line.
  #
  # If a directory does not exist when Python is started, it will be ignored.
  %s
  """ % myPackagePath
  
  print("Adding path:", myPackagePath)
  
  usp = Path(site.getusersitepackages())
  usp.mkdir(parents=True, exist_ok=True)
  uspfile = usp / 'GST.pth'
  with open(uspfile, 'w') as f:
      f.write(pathspec)
      print('Wrote to {}'.format(uspfile))
  
  print("GST package installed successfully!")
  