Maybe we could only do this for some modules until custom_inner_attributes is stabilized? I think rightward drift might be an issue, as would git blame results. It'd be great if we could make rustfmt format it like below, ignoring indentation for just that block, though I don't think that's possible:

#[pymodule]
mod decl {

#[pyfunction]
fn thing() {}

}

For the formatting, I couldn't find any way to change local indent hint if we don't want to disable the whole file formatting. Also derive macro seems still always require to match the brace pair.

Is it possible to add #[pymodule] to use part of mod.rs for same result? I don't know well but it doesn't look like - because item iteration looks only possible on actual module code.

The mentioned issue looks quite old and then it means it is not expected to be solved in near future. Just go by experiencing git blame barrier?

Yeah, I guess so; I haven't gotten a ton of use out of git blame for this project, and I think the stdlib is generally simple/encapsulated enough that it wouldn't be used that much there.

@youknowone I think this change make developing harder. When I have errors the compiler does not show the line numbers and add suggestion:

error[E0308]: mismatched types
  |
  = note: expected reference `&std::sync::Arc<pyobject::PyObject<(dyn pyobject::PyObjectPayload + 'static)>>`
                found struct `std::sync::Arc<pyobject::PyObject<dyn pyobject::PyObjectPayload>>`

Is there a way to fix this?

I am sorry that discovering this comment so late. should we consider to revert this?