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Migrate derivative to educe (#8125)

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Fixes #7001.


  Mostly mechanical replacement of `derivative` attributes with `educe` ones.

### **Attribute Syntax Changes**

```rust
// Bounds: = "..." → (...)
#[derivative(Hash(bound = "E: EthSpec"))]
#[educe(Hash(bound(E: EthSpec)))]

// Ignore: = "ignore" → (ignore)
#[derivative(PartialEq = "ignore")]
#[educe(PartialEq(ignore))]

// Default values: value = "..." → expression = ...
#[derivative(Default(value = "ForkName::Base"))]
#[educe(Default(expression = ForkName::Base))]

// Methods: format_with/compare_with = "..." → method(...)
#[derivative(Debug(format_with = "fmt_peer_set_as_len"))]
#[educe(Debug(method(fmt_peer_set_as_len)))]

// Empty bounds: removed entirely, educe can infer appropriate bounds
#[derivative(Default(bound = ""))]
#[educe(Default)]

// Transparent debug: manual implementation (educe doesn't support it)
#[derivative(Debug = "transparent")]
// Replaced with manual Debug impl that delegates to inner field
```

**Note**: Some bounds use strings (`bound("E: EthSpec")`) for superstruct compatibility (`expected ','` errors).


Co-Authored-By: Javier Chávarri <javier.chavarri@gmail.com>

Co-Authored-By: Mac L <mjladson@pm.me>
This commit is contained in:
Javier Chávarri
2025-11-06 15:13:57 +01:00
committed by GitHub
parent 0090b35ee0
commit 2c1f1c1605
56 changed files with 277 additions and 287 deletions
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6
crypto/kzg/src/kzg_commitment.rs
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@@ -1,5 +1,5 @@
use c_kzg::BYTES_PER_COMMITMENT;
use derivative::Derivative;
use educe::Educe;
use ethereum_hashing::hash_fixed;
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
@@ -11,8 +11,8 @@ use tree_hash::{Hash256, PackedEncoding, TreeHash};
pub const VERSIONED_HASH_VERSION_KZG: u8 = 0x01;
#[derive(Derivative, Clone, Copy, Encode, Decode)]
#[derivative(PartialEq, Eq, Hash)]
#[derive(Educe, Clone, Copy, Encode, Decode)]
#[educe(PartialEq, Eq, Hash)]
#[ssz(struct_behaviour = "transparent")]
pub struct KzgCommitment(pub [u8; c_kzg::BYTES_PER_COMMITMENT]);