A PR for a doc update would be welcomed.
From the changelog
Remove the ability to use
pip list --outdated
in combination with--format=freeze
. (#9789)
this change was made in issue 9789. In that issue, I provide an alternative:
Actually, if you want the output @matrixise expects, the following gives it:
> py -m pip list --outdated --format=json | jq -r '.[] | .name+\"=\"+.latest_version' idna=3.1 setuptools=54.2.0 urllib3=1.26.4
(excuse Powershell quoting rules, for Unix probably just omit the backslashes).
(But note that as per the discussion in the issue, this does not provide a list of requirements that will necessarily “upgrade everything” the way you would expect. See the issue for details).