use jinja2 < 3.0.0

[atsai1220]

Using Python 3.9.0 and 3.10.0 with a fresh environment causes this error:

Traceback (most recent call last):
  File "/Users/atsai/.pyenv/versions/silver-memory-3.9.0/bin/mkdocs", line 8, in <module>
    sys.exit(cli())
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/click/core.py", line 1128, in __call__
    return self.main(*args, **kwargs)
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/click/core.py", line 1053, in main
    rv = self.invoke(ctx)
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/click/core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/click/core.py", line 1395, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/click/core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/__main__.py", line 187, in build_command
    build.build(config.load_config(**kwargs), dirty=not clean)
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/config/base.py", line 216, in load_config
    from mkdocs.config.defaults import get_schema
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/config/defaults.py", line 1, in <module>
    from mkdocs.config import config_options
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/config/config_options.py", line 8, in <module>
    from mkdocs import utils, theme, plugins
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/theme.py", line 6, in <module>
    from mkdocs.utils import filters
  File "/Users/atsai/.pyenv/versions/3.9.0/envs/silver-memory-3.9.0/lib/python3.9/site-packages/mkdocs/utils/filters.py", line 13, in <module>
    @jinja2.contextfilter
AttributeError: module 'jinja2' has no attribute 'contextfilter'
mike: Command '['mkdocs', 'build', '--clean', '--config-file', 'mkdocs.yml']' returned non-zero exit status 1.

In jinja2 documentation they referenced the deprecation of contextfilter and currently setup.py is not configured for a specific version.

https://jinja.palletsprojects.com/en/3.0.x/api/#jinja2.pass_context

[jimporter]

mike doesn't use Jinja's contextfilter that I can see (though if it does, I'd prefer a patch to convert to the current Jinja API). The traceback you posted shows errors happening within MkDocs itself, so I think it would be better to fix this in MkDocs. See mkdocs/mkdocs#2794, mkdocs/mkdocs#2799, and mkdocs/mkdocs#2795.

[squidfunk]

Limiting to <3.1 should be enough. That's what I did for Material for MkDocs as a temporary fix.

[atsai1220]

Thank you for the response. I'll close this and follow along with the mkdocs issues. mike is a great tool!

[jimporter]

This should be fixed in MkDocs now: see mkdocs/mkdocs#2800.