Config file format is inconvenient when you have a lot of untyped dependencies

[Phlogistique]

• Are you reporting a bug, or opening a feature request?

Feature request.

• Please insert below the code you are checking with mypy,
  or a mock-up repro if the source is private. We would appreciate
  if you try to simplify your case to a minimal repro.

When a project with many dependencies is ported to mypy, it will typically have to tell mypy to ignore the imports of these many dependencies. That means that the mypy.ini config file will look like this

[mypy-numpy]
ignore_missing_imports = True
[mypy-cv2]
ignore_missing_imports = True
[mypy-bson,bson.*]
ignore_missing_imports = True

For big projects, this list will be very long.

• What is the behavior/output you expect?

It would be nice if you could specify the list as a single option in the mypy config file:

[mypy]
ignore_missing_imports =
    numpy
    cv2
    bson
    ...

[JukkaL]

Yeah I can see how the current situation can be clumsy. The name of the setting should perhaps not be ignore_missing_imports, however, since that already has a meaning.

[Phlogistique]

How about ignore_missing_imports_from? Having a similar name makes it more discoverable, and from makes it clear that it is more restrictive than a blanket ignore_missing_imports.

[JukkaL]

Hmm I think that is too close to the existing configuration option.

What about allow_missing_stubs = numpy, cv2, ...? This would communicate that the import might be available (in site-packages), but it's missing stubs. Also it would server as a hint about how to resolve the issue: install or create stubs.

[Phlogistique]

It sounds good to me.

It would require documenting the relationship between this and ignore_missing_imports.