Referencing an external schema by its URL within a local schema

[not-my-profile]

pyproject.json exists as a local schema in this repository ... which I think does make sense.

The tool.ruff property within pyproject.json however would ideally point to the schema file within the ruff repository. However that does not appear to be currently possible. With the documentation stating:

How to $ref from schema_x.json to schema_y.json

• Both schemas must exist locally in SchemaStore.

I think it would be nice if this limitation was lifted.

[hyperupcall]

As some extra information, this used to be possible with the tv4 validator (AJV is mostly used nowadays), but there was some troubles with the build server failing randomly due to inaccessible links (more info here).

It would be nice if this could be implemented while avoiding or mitigating some of the previous issues.

[hyperupcall]

Note to self: json-schema-ref-parser can make it easier to do this.