Feature request: reorder_type_constraints

Requested feature(s):

EDIT: (1) is a duplicate of #4112, which was a duplicate of #1867 - ignore this and focus on #2.

1. Use reorder_derive_items to have rustfmt change:

#[derive(PartialEq, Copy, Display, Clone)]

Into:

#[derive(Clone, Copy, Display, PartialEq)]

That is, alphabetically sort the derived types.

2. Use reorder_type_constraints to have rustfmt change:

pub fn<T: PartialEq + Copy + Debug + 'static + Clone>foo(...) { ... }

Into:

pub fn<T: 'static + Clone + Copy + Debug + PartialEq>foo(...) { ... }

That is, alphabetically sort the contsraint types (and sort lifetimes before types).

Motivation:

When there are more than 2-3 types in either derive or a constraint, it is tedius and error-prone to manually ensure they all appear in the same order. However it is useful for them to be in a deterministic order as this makes it easier to read a list, and more importantly to see the difference between two lists.

Options

Perhaps "standard" traits should be sorted before all other traits?