Tox error due to slimit test

[Pyvonix]

While running tests on v2.0.8, some errors happen only for slimit tests.

tox error:

  ERROR: test_slimit (tests.tests.test_compressor.CompressorImplementationTest)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/home/runner/work/django-pipeline/django-pipeline/tests/tests/test_compressor.py", line 230, in test_slimit
      self._test_compressor('pipeline.compressors.slimit.SlimItCompressor',
    File "/home/runner/work/django-pipeline/django-pipeline/tests/tests/test_compressor.py", line 215, in _test_compressor
      result = self.compressor.compress_js(
    File "/home/runner/work/django-pipeline/django-pipeline/pipeline/compressors/__init__.py", line 66, in compress_js
      js = getattr(compressor(verbose=self.verbose), 'compress_js')(js)
    File "/home/runner/work/django-pipeline/django-pipeline/pipeline/compressors/slimit.py", line 10, in compress_js
      from slimit import minify
    File "/home/runner/work/django-pipeline/django-pipeline/.tox/py39-dj31/lib/python3.9/site-packages/slimit/__init__.py", line 27, in <module>
      from minifier import minify
  ModuleNotFoundError: No module named 'minifier'
  
  ----------------------------------------------------------------------

After some investigations, the package slimit have as the last release on Pypi and github the version v0.8.1 on Mar 26, 2013 which is in Python 2 (PR open since Oct 2, 2018 to merge Python 3 in master and create a new release).

Only the branch develop have recent commits and official support of Python 3.

The package available in Pypi, have an __init__.py file that look like:

from minifier import minify

Otherwise the file init.py in the repository is:

from slimit.minifier import minify  # noqa: F401

Solution :

• Should we ignore error for the test test_slimit?
• Should we drop the support for this library that doesn't have any release since 2013?
• Should we manually git pull the repository with the latest commit, build the package and install it.

[cyberdelia]

We can probably drop it since technically Django don't even support 2.x anymore.