Incompatibility with apispec 4.0.0 -> schema2parameters() now needs an argument "location"

[Houkime]

The change was introduced in marshmallow-code/apispec@ee8002b

And apispec 4.0.0 went live on september 30 with this included.

The new signature is like here (openapi.py, comments included so that constraints are clearer):

 def schema2parameters(
        self, schema, *, location, name="body", required=False, description=None
    ):
        """Return an array of OpenAPI parameters given a given marshmallow
        :class:`Schema <marshmallow.Schema>`. If `location` is "body", then return an array
        of a single parameter; else return an array of a parameter for each included field in
        the :class:`Schema <marshmallow.Schema>`.

        In OpenAPI 3, only "query", "header", "path" or "cookie" are allowed for the location
        of parameters. "requestBody" is used when fields are in the body.

        https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject
        """

(take note that "body" is not allowed in OpenAPI 3)

[Houkime]

Ok, so my exact problem with this (mentioned right above) was occuring on Arch Linux.
requirements.txt does actually forbid apispec from crossing 4.0.0 but the Arch package

https://www.archlinux.org/packages/community/any/python-aiohttp-apispec/

does not account for that and allows to use apispec 4.0.0.

So, currently aiohttp_apispec is broken on Arch if installed from pacman and works if installed from pip.
Notified maintainer.

[FFY00]

cc @felixonmars

[Houkime]

Opened Arch bug report at https://bugs.archlinux.org/task/68874

[maximdanilchenko]

Closed with #115