Python 3.8 fails to install

[miigotu]

Is this project maintained? Should I provide a PR or should I fork?

95% ❯ poetry add singleton-decorator
Using version ^1.0.0 for singleton-decorator

Updating dependencies
Resolving dependencies... (20.6s)

Writing lock file

Package operations: 1 install, 0 updates, 2 removals

  • Removing importlib-metadata (4.8.3)
  • Removing zipp (3.6.0)
  • Installing singleton-decorator (1.0.0): Failed

  EnvCommandError

  Command ['/home/miigotu/Projects/SickChill/.venv/bin/pip', 'install', '--no-deps', '/home/miigotu/.cache/pypoetry/artifacts/85/12/9b/88f27c3a8f8ace7e703ac022f555c1b43b4276fec8eacbb040def2a5c6/singleton-decorator-1.0.0.tar.gz'] errored with the following return code 1, and output: 
  Processing /home/miigotu/.cache/pypoetry/artifacts/85/12/9b/88f27c3a8f8ace7e703ac022f555c1b43b4276fec8eacbb040def2a5c6/singleton-decorator-1.0.0.tar.gz
      ERROR: Command errored out with exit status 1:
       command: /home/miigotu/Projects/SickChill/.venv/bin/python3 -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-e4pnisq2/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-e4pnisq2/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-2uj42f8d
           cwd: /tmp/pip-req-build-e4pnisq2/
      Complete output (13 lines):
      Traceback (most recent call last):
        File "<string>", line 1, in <module>
        File "/home/miigotu/Projects/SickChill/.venv/lib/python3.9/site-packages/setuptools/__init__.py", line 18, in <module>
          from setuptools.dist import Distribution
        File "/home/miigotu/Projects/SickChill/.venv/lib/python3.9/site-packages/setuptools/dist.py", line 33, in <module>
          from ._importlib import metadata
        File "/home/miigotu/Projects/SickChill/.venv/lib/python3.9/site-packages/setuptools/_importlib.py", line 28, in <module>
          disable_importlib_metadata_finder(metadata)
        File "/home/miigotu/Projects/SickChill/.venv/lib/python3.9/site-packages/setuptools/_importlib.py", line 17, in disable_importlib_metadata_finder
          to_remove = [
        File "/home/miigotu/Projects/SickChill/.venv/lib/python3.9/site-packages/setuptools/_importlib.py", line 20, in <listcomp>
          if isinstance(ob, importlib_metadata.MetadataPathFinder)
      AttributeError: module 'importlib_metadata' has no attribute 'MetadataPathFinder'