new_contents: # Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
  # Spack Project Developers. See the top-level COPYRIGHT file for details.
  #
  # SPDX-License-Identifier: (Apache-2.0 OR MIT)
  
  from spack import *
  
  
  class PySniffio(PythonPackage):
      """This is a tiny package whose only purpose is to let you detect which
      async library your code is running under."""
  
      homepage = "https://github.com/python-trio/sniffio"
      url      = "https://pypi.io/packages/source/s/sniffio/sniffio-1.1.0.tar.gz"
  
      version('1.1.0', sha256='8e3810100f69fe0edd463d02ad407112542a11ffdc29f67db2bf3771afb87a21')
  
      depends_on('py-setuptools', type='build')
      depends_on('py-wheel', type='build')
      depends_on('py-certifi')
  
subject: Add py-sniffio (#19170)