# Copyright 2013-2018 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 *
import os.path


class PerlExtension(PerlPackage):
    """A package which extends perl"""

    homepage = "http://www.example.com"
    url      = "http://www.example.com/extension1-1.0.tar.gz"

    version('1.0', 'hash-extension-1.0')
    version('2.0', 'hash-extension-2.0')

    def install(self, spec, prefix):
        mkdirp(prefix.bin)
        with open(os.path.join(prefix.bin, 'perl-extension'), 'w+') as fout:
            fout.write(str(spec.version))

    # Give the package a hook to set the extendee spec
    extends_spec = 'perl'

    @property
    def extendee_spec(self):
        return self.extends_spec
