The spec seems to indicate that this is valid:
https://avro.apache.org/docs/1.11.1/specification/

Right under Schema Declaration

{"type": "typeName" ...attributes...}

where typeName is either a primitive or derived type name, as defined below

List of primitive types

Primitive Types
The set of primitive type names is:

null: no value
...

And then below the list:

Primitive type names are also defined type names. Thus, for example, the schema “string” is equivalent to:
{"type": "string"}

Which is why "null" is shorthand for {"type": "null"}

ty that makes sense, thanks for the pointer

Looks like theres a linter issue, could you run make lint locally?

@Tishj I was not able to find or generate an avro manifest list file to verify this. Do you have one?