bump black to 21.5b2

[gnawhleinad]

https://pypi.org/project/black/ 21.5b2 was released on May 31, 2021.

The current version 20.8 was released ~August 2020. py39 was added in
September 2020 with psf/black#1717.

[nvuillam]

Mega-Linter updates itself automatically , so when command pip install black will install this newest version, it will be taken in account :)

[gnawhleinad]

Mega-Linter updates itself automatically , so when command pip install black will install this newest version, it will be taken in account :)

@nvuillam, thanks for that context!

However, I'm a bit confused since https://pypi.org/project/black/'s 21.5b2 was released on May 31, 2021. How frequently does mega-linter update itself?

[nvuillam]

The auto update job is run daily :)
Black probably released a version but did not update the pip package yet

[gnawhleinad]

The auto update job is run daily :)
Black probably released a version but did not update the pip package yet

Please let me know if I need to file a bug... but it seems like black was released:

$ pip download black
Collecting black
  File was already downloaded /hodor/black-21.5b2-py3-none-any.whl
...

This seems consistent with https://pypi.org/project/black/#history which shows:

Is it possible that mega-linter is looking for non-pre-release versions...?

[nvuillam]

I think pip3 install retrieves the latest official release, as you can see there -> https://github.com/nvuillam/mega-linter/blob/63cd757a63af403764daefd5d5a97479225be41d/Dockerfile#L126

Pre-releases must be considered not stable enough, so it seems normal they are not used in Mega-Linter ^^

If you want to force a black version, you can use PRE_COMMANDS configuration to install it your way, it is called before the linters execution :)