"Please report this" message re: issue #9617

[finite-state-machine]

Description

I'm seeing the following message when attempting to upgrade mypy:

WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8/UNKNOWN
sysconfig: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8
WARNING: Additional context:
user = False
home = None
root = None
prefix = None

Issue #9617 is locked, so it's impossible to report the message. If reports are no longer wanted, the message should be removed.

Expected behavior

Either it should be possible to report the message as requested, or the message should not appear.

pip version

21.1

Python version

3.8.3 (installed via pyenv, which was installed via homebrew)

OS

macOS 10.14

How to Reproduce

I'm unable to reproduce this issue in a fresh virtualenv. Any advice for determining what about my environment might be triggering the issue would be appreciated. (Regardless, it's impossible to report the message, so I stand by the suggestion that the message be removed if reports are no longer desired.)

On my environment, running python3 -m pip install --upgrade mypy is sufficient to trigger the issue.

Output

WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8/UNKNOWN
sysconfig: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8
WARNING: Additional context:
user = False
home = None
root = None
prefix = None
Requirement already satisfied: mypy in /Users/dsuffling/.pyenv/versions/3.8.3/lib/python3.8/site-packages (0.812)
Requirement already satisfied: typing-extensions>=3.7.4 in /Users/dsuffling/.pyenv/versions/3.8.3/lib/python3.8/site-packages (from mypy) (3.7.4.3)
Requirement already satisfied: mypy-extensions<0.5.0,>=0.4.3 in /Users/dsuffling/.pyenv/versions/3.8.3/lib/python3.8/site-packages (from mypy) (0.4.3)
Requirement already satisfied: typed-ast<1.5.0,>=1.4.0 in /Users/dsuffling/.pyenv/versions/3.8.3/lib/python3.8/site-packages (from mypy) (1.4.3)
WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8/UNKNOWN
sysconfig: /Users/dsuffling/.pyenv/versions/3.8.3/include/python3.8
WARNING: Additional context:
user = False
home = None
root = None
prefix = None

Code of Conduct

• I agree to follow the PSF Code of Conduct.

Is there a fix for this? I'm not very tech savvy and can't figure out the meaning of all this

[sbidoul]

Work is ongoing to resolve the reported cases. In particular the one of this issue is handled in #9838. Thanks for reporting.