Black: 20.8b0 fails with `__init__() got an unexpected keyword argument 'hidden'` on Click older than 7.0

[knkski]

Describe the bug

When I run black version 20.8b0 in Github Actions, it fails with this traceback:

Traceback (most recent call last):
  File "/usr/local/bin/black", line 7, in <module>
    from black import patched_main
  File "/usr/local/lib/python3.6/dist-packages/black/__init__.py", line 507, in <module>
    ) -> None:
  File "/usr/lib/python3/dist-packages/click/decorators.py", line 170, in decorator
    _param_memo(f, OptionClass(param_decls, **attrs))
  File "/usr/lib/python3/dist-packages/click/core.py", line 1460, in __init__
    Parameter.__init__(self, param_decls, type=type, **attrs)
TypeError: __init__() got an unexpected keyword argument 'hidden'

To Reproduce

1. sudo pip3 install black
2. black --check .
3. See error

Expected behavior

Black would display any files that failed formatting check

Environment (please complete the following information):

• Version: 20.8b0
• OS and Python version: Default Github Actions image (Ubuntu 18.04/Python 3.6)

[knkski]

I'm not entirely sure, but it looks like the error is coming from this line:

https://github.com/psf/black/blob/9270a10f6f59f069eb14ffba0c75f58e5895b27c/src/black/__init__.py#L384

[ambv]

We'll release a follow-up. In the mean time please pip3 install -U click to fix this.

[JelleZijlstra]

Looks like the option was new in Click 7.0. I'll send a PR to use that as the minimum requirement for Black.

[brysontyrrell]

+1 I also ran into sudden failures in GitHub actions when they pulled 20.8b0. I pinned the install to 19.10b0 to workaround.

[ambv]

@brysontyrrell, try pinning Click to >=7.1.2 instead and see if that works for you.

[ambv]

Released a hotfix 20.8b1 that addresses this. Please confirm.

[knkski]

Working for me. Thanks!

[brysontyrrell]

Still not working for me.

Oh no! 💥 💔 💥
14 files would be reformatted, 37 files would be left unchanged.
##[error]Process completed with exit code 1.

I re-ran and it pulled black 20.8b1 and click 7.1.2. Same versions of the packages locally don't encounter this. Maybe this is actually related to #1629 ?

[zsol]

That looks like a different problem @brysontyrrell. I'm guessing you're running black --check and it would make formatting changes to your files (which is expected), so it exits with 1

[ambv]

@brysontyrrell No, this is not related to #1629. The message you pasted tells you what's going on. This is a new version of an auto-formatter. The new version changed how it formats files. Commit the changes and you're good to go.

[brysontyrrell]

@ambv Thanks for clarifying. I had a caching issue locally that was causing 19.10 to be reinstalled and I wasn't catching it.

[bblommers]

@ambv The hotfix does not solve the issue for us. See https://travis-ci.org/github/spulec/moto/jobs/721404011

[ambv]

@bblommers The logs on that Travis job tell you what's wrong. Namely the lines in the sdist step:

ERROR: black 20.8b1 has requirement click>=7.1.2, but you'll have click 6.7 which is incompatible.
ERROR: black 20.8b1 has requirement regex>=2020.1.8, but you'll have regex 2019.11.1 which is incompatible.

And why are you getting those? Because you request them explicitly here:
https://github.com/spulec/moto/blob/master/requirements-dev.txt#L16

(regex is on line 4 here)

[bblommers]

@ambv Well, that's awkward. I completely overlooked those lines! Thanks for the response