old_contents: from spack import *
  
  class Mrnet(Package):
      """The MRNet Multi-Cast Reduction Network."""
      homepage = "http://paradyn.org/mrnet"
      url      = "ftp://ftp.cs.wisc.edu/paradyn/mrnet/mrnet_4.0.0.tar.gz"
  
      versions = { '4.0.0' : 'd00301c078cba57ef68613be32ceea2f', }
      parallel = False
  
      def install(self, spec, prefix):
          configure("--prefix=%s" %prefix, "--enable-shared")
  
          make()
          make("install")
  
new_contents: from spack import *
  
  class Mrnet(Package):
      """The MRNet Multi-Cast Reduction Network."""
      homepage = "http://paradyn.org/mrnet"
      url      = "ftp://ftp.cs.wisc.edu/paradyn/mrnet/mrnet_4.0.0.tar.gz"
  
      versions = { '4.0.0' : 'd00301c078cba57ef68613be32ceea2f', }
      parallel = False
  
      def install(self, spec, prefix):
          configure("--prefix=%s" %prefix, "--enable-shared")
  
          make()
          make("install")
  
          # TODO: copy configuration header files to include directory
          #       this can be removed once we have STAT-2.1.0
          import shutil
          shutil.copy2('%s/lib/mrnet-%s/include/mrnet_config.h' % (prefix, self.version), '%s/include/mrnet_config.h' % prefix)
          shutil.copy2('%s/lib/xplat-%s/include/xplat_config.h' % (prefix, self.version), '%s/include/xplat_config.h' % prefix)
  
subject: copy config header files to prefix/include