SerdeError: Unsupported type when subclass is member of dataclass

[davetapley]

For reasons I have something like this:

from pathlib import PosixPath

class Test(PosixPath):
    ...

It works just fine on its own:

from serde.json import to_json

t = Test('.')
print(to_json(t))

# "."

But when a member of another dataclass I get SerdeError:

@dataclass
class B:
    p: Test

b = B(Test('.'))
print(to_json(b))

# serde.compat.SerdeError: Unsupported type: Test

Full repro: https://gist.github.com/davetapley/8c71c2918cd587442f3af7a1e4a24c40

[davetapley]

For now I can workaround with custom add_serializer / add_deserializer.

[davetapley]

FYI this example is now broken due to:

• Can't infer serializer for PurePosixPath subclass since 0.14.2 #515