Why is Eq skipped in ModelEx?

[kapalla]

A simple model like this

#[sea_orm::model]
#[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
#[sea_orm(table_name = "cake")]
pub struct Model {
    #[sea_orm(primary_key)]
    pub id: i32,
    pub name: String,
}

causes a clippy error with the -D clippy::derive-partial-eq-without-eq flag or the clippy::nursery group.

sea-orm/sea-orm-macros/src/derives/model_ex.rs

Lines 100 to 102 in 13be0db

	if meta.path.is_ident("Eq") {
	// skip
	} else if meta.path.is_ident("DeriveEntityModel") {

[kapalla]

After creating additional models, I started receiving more specific error messages explaining why Eq cannot be applied to ModelEx. As I understand it, this is due to relations that are defined as attributes in ModelEx. If these cannot be Eq (for example, because of an f32 attribute) then the related model can no longer be Eq either.

However, instead of suppressing the Clippy error manually in these cases, it would be better if the macro handled it automatically. Accordingly, I’ve submitted a PR #3180