Required plugin message is ambiguous

[daviddavis]

Run a pulp_python command (e.g. pulp python repository list) without pulp_python installed. You'll get an error:

Error: The server does not have 'python>=3.1.0.dev' installed, which is needed to use this command.

This resulted in some confusion because the user thought that the CLI was telling them that their version of Python was outdated. The error should probably say pulp_python instead of python.

[mdellweg]

I agree that this is confusing. Even more so with pulp_python versions approaching 3.7 ...
If we do not want to carry the translation "app label" -> "python package" around, can we maybe reformulate to
"The server does not provide the component 'python>=3.1.0.dev', which is needed to use {this command}. See 'pulp status' for installed components."

Funny part: We used to report the package name in the status API...

[daviddavis]

Ah yea, I filed an issue here: https://pulp.plan.io/issues/9084. Maybe there is some way to clarify this better in the status api.

[daviddavis]

The server does not provide the component 'python>=3.1.0.dev', which is needed to use {this command}. See 'pulp status' for installed components.

The error message looks good. I might be more specific though with "pulp component" or "plugin".