pip install hg-evolve failed

Mon Dec 3 13:04:29 UTC 2018

This is on a fully-update fedora F29 system:

pip3 install --user hg-evolve
Collecting hg-evolve
  Downloading 
https://files.pythonhosted.org/packages/c7/8d/6c7879f6b0d69bb804697026093fd081bc2a1e9e3ac65e71f711f1e361c7/hg-evolve-8.3.2.tar.gz (732kB)
    100% |â–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆâ–ˆ| 737kB 4.9MB/s 
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-xkrr7azx/hg-evolve/setup.py", line 37, in 
<module>
        version=get_version(),
      File "/tmp/pip-install-xkrr7azx/hg-evolve/setup.py", line 15, in 
get_version
        return get_metadata()['__version__']
      File "/tmp/pip-install-xkrr7azx/hg-evolve/setup.py", line 10, in 
get_metadata
        execfile(fullpath, meta)
    NameError: name 'execfile' is not defined