How to configure rustfmt to align types of struct fields?

[flosse]

Readability is quite important, so instead of

struct Foo {
    this_is_filed: f64,
    foo: String,
    another_field: u32,
    baz: bool,
    and_some_more: i8,
}

I'd like to use the much cleaner variant:

struct Foo {
    this_is_filed : f64,
    foo           : String,
    another_field : u32,
    baz           : bool,
    and_some_more : i8
}

How can I say to rustfmt that it should use the latter one?

[nrc]

It is not possible at the moment, sorry. It is somewhat tricky to implement and would need some deep changes to implement generally, but might be easier to do in restricted cases like this. If you're interested in implementing, I can mentor.

This is a dup of #1103, so closing.

[wasd96040501]

Is it now be possible? @nrc

[ytmimi]

@wasd96040501 please see the struct_field_align_threshold option.