text: # Copyright 2013-2022 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.package import *
  
  
  class RNpsurv(RPackage):
      """Nonparametric Survival Analysis.
  
      Non-parametric survival analysis of exact and interval-censored
      observations. The methods implemented are developed by Wang (2007)
      <doi:10.1111/j.1467-9868.2007.00583.x>, Wang (2008)
      <doi:10.1016/j.csda.2007.10.018>, Wang and Taylor (2013)
      <doi:10.1007/s11222-012-9341-9> and Wang and Fani (2018)
      <doi:10.1007/s11222-017-9724-z>."""
  
      cran = "npsurv"
  
      version('0.5-0', sha256='bc87db76e7017e178c2832a684fcd49c42e20054644b21b586413d26c8821dc6')
      version('0.4-0', sha256='404cf7135dc40a04e9b81224a543307057a8278e11109ba1fcaa28e87c6204f3')
  
      depends_on('r-lsei', type=('build', 'run'))
  