* Package:    dev-python/astor-0.7.1
 * Repository: python-modules-kit
 * Maintainer: python@gentoo.org
 * USE:        amd64 elibc_glibc kernel_linux python_targets_python2_7 python_targets_python3_7 userland_GNU
 * FEATURES:   preserve-libs userpriv
>>> Unpacking source...
>>> Unpacking astor-0.7.1.tar.gz to /var/tmp/portage/dev-python/astor-0.7.1/work
>>> Source unpacked in /var/tmp/portage/dev-python/astor-0.7.1/work
>>> Preparing source in /var/tmp/portage/dev-python/astor-0.7.1/work/astor-0.7.1 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-python/astor-0.7.1/work/astor-0.7.1 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-python/astor-0.7.1/work/astor-0.7.1 ...
 * python3_7: running distutils-r1_run_phase distutils-r1_python_compile
python3.7 setup.py build -j 16
Traceback (most recent call last):
  File "setup.py", line 17, in <module>
    setup(**config['options'])
  File "/usr/lib/python3.7/site-packages/setuptools/__init__.py", line 165, in setup
    return distutils.core.setup(**attrs)
  File "/usr/lib/python3.7/distutils/core.py", line 108, in setup
    _setup_distribution = dist = klass(attrs)
  File "/usr/lib/python3.7/site-packages/setuptools/dist.py", line 430, in __init__
    k: v for k, v in attrs.items()
  File "/usr/lib/python3.7/distutils/dist.py", line 292, in __init__
    self.finalize_options()
  File "/usr/lib/python3.7/site-packages/setuptools/dist.py", line 721, in finalize_options
    ep(self)
  File "/usr/lib/python3.7/site-packages/setuptools/dist.py", line 728, in _finalize_setup_keywords
    ep.load()(self, ep.name, value)
  File "/usr/lib/python3.7/site-packages/setuptools/dist.py", line 291, in check_specifier
    packaging.specifiers.SpecifierSet(value)
  File "/usr/lib/python3.7/site-packages/setuptools/_vendor/packaging/specifiers.py", line 572, in __init__
    specifiers = [s.strip() for s in specifiers.split(",") if s.strip()]
AttributeError: 'SpecifierSet' object has no attribute 'split'
 * ERROR: dev-python/astor-0.7.1::python-modules-kit failed (compile phase):
 *   (no error message)
 * 
 * Call stack:
 *     ebuild.sh, line   93:  Called src_compile
 *   environment, line 2747:  Called distutils-r1_src_compile
 *   environment, line  832:  Called _distutils-r1_run_foreach_impl 'distutils-r1_python_compile'
 *   environment, line  328:  Called python_foreach_impl 'distutils-r1_run_phase' 'distutils-r1_python_compile'
 *   environment, line 2296:  Called multibuild_foreach_variant '_python_multibuild_wrapper' 'distutils-r1_run_phase' 'distutils-r1_python_compile'
 *   environment, line 1656:  Called _multibuild_run '_python_multibuild_wrapper' 'distutils-r1_run_phase' 'distutils-r1_python_compile'
 *   environment, line 1654:  Called _python_multibuild_wrapper 'distutils-r1_run_phase' 'distutils-r1_python_compile'
 *   environment, line  529:  Called distutils-r1_run_phase 'distutils-r1_python_compile'
 *   environment, line  823:  Called distutils-r1_python_compile
 *   environment, line  691:  Called esetup.py 'build' '-j' '16'
 *   environment, line 1201:  Called die
 * The specific snippet of code:
 *       "${@}" || die "${die_args[@]}";
 * 
 * If you need support, post the output of `emerge --info '=dev-python/astor-0.7.1::python-modules-kit'`,
 * the complete build log and the output of `emerge -pqv '=dev-python/astor-0.7.1::python-modules-kit'`.
 * The complete build log is located at '/var/tmp/portage/dev-python/astor-0.7.1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-python/astor-0.7.1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-python/astor-0.7.1/work/astor-0.7.1'
 * S: '/var/tmp/portage/dev-python/astor-0.7.1/work/astor-0.7.1'