[CI] seqeval installation fails sometimes on python 3.6
Author: lhoestq | Pull request: no | State: closed

The CI sometimes fails to install seqeval, which cause the `seqeval` metric tests to fail.

The installation fails because of this error:
```
Collecting seqeval
  Downloading seqeval-1.2.2.tar.gz (43 kB)


     |███████▌                        | 10 kB 42.1 MB/s eta 0:00:01
     |███████████████                 | 20 kB 53.3 MB/s eta 0:00:01
     |██████████████████████▌         | 30 kB 67.2 MB/s eta 0:00:01
     |██████████████████████████████  | 40 kB 76.1 MB/s eta 0:00:01
     |████████████████████████████████| 43 kB 10.0 MB/s            
  Preparing metadata (setup.py) ... - error
  ERROR: Command errored out with exit status 1:
   command: /home/circleci/.pyenv/versions/3.6.15/bin/python3.6 -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-1l96tbyj/seqeval_b31086f711d84743abe6905d2aa9dade/setup.py'"'"'; __file__='"'"'/tmp/pip-install-1l96tbyj/seqeval_b31086f711d84743abe6905d2aa9dade/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-pf54_vqy
       cwd: /tmp/pip-install-1l96tbyj/seqeval_b31086f711d84743abe6905d2aa9dade/
  Complete output (22 lines):
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-install-1l96tbyj/seqeval_b31086f711d84743abe6905d2aa9dade/setup.py", line 56, in <module>
      'Programming Language :: Python :: Implementation :: PyPy'
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/site-packages/setuptools/__init__.py", line 143, in setup
      return distutils.core.setup(**attrs)
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/distutils/core.py", line 108, in setup
      _setup_distribution = dist = klass(attrs)
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/site-packages/setuptools/dist.py", line 442, in __init__
      k: v for k, v in attrs.items()
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/distutils/dist.py", line 281, in __init__
      self.finalize_options()
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/site-packages/setuptools/dist.py", line 601, in finalize_options
      ep.load()(self, ep.name, value)
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2346, in load
      return self.resolve()
    File "/home/circleci/.pyenv/versions/3.6.15/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2352, in resolve
      module = __import__(self.module_name, fromlist=['__name__'], level=0)
    File "/tmp/pip-install-1l96tbyj/seqeval_b31086f711d84743abe6905d2aa9dade/.eggs/setuptools_scm-7.0.2-py3.6.egg/setuptools_scm/__init__.py", line 5
      from __future__ import annotations
      ^
  SyntaxError: future feature annotations is not defined
  ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/9d/2d/233c79d5b4e5ab1dbf111242299153f3caddddbb691219f363ad55ce783d/seqeval-1.2.2.tar.gz#sha256=f28e97c3ab96d6fcd32b648f6438ff2e09cfba87f05939da9b3970713ec56e6f (from https://pypi.org/simple/seqeval/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

```

for example in https://app.circleci.com/pipelines/github/huggingface/datasets/12665/workflows/93878eb9-a923-4b35-b2e7-c5e9b22f10ad/jobs/75300

Here is a diff of the pip install logs until the error is reached: https://www.diffchecker.com/VkQDLeQT

This could be caused by the latest updates of setuptools-scm