replace serde-brief with pot to downgrade msrv

.github/workflows/ci.yml

@@ -36,7 +36,6 @@ jobs:
         crate: cargo-binstall
     - run: cargo binstall -y --force cargo-risczero@$RISC0_VERSION
     - run: cargo risczero install --version $RISC0_TOOLCHAIN_VERSION
-    - run: cargo risczero build-toolchain --version erik/risc0-1.81.0
     - run: cargo test --workspace --all-targets -F debug-guest-build
 
   clippy:
@@ -61,9 +60,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - if: matrix.feature == 'cuda'
-        uses: risc0/risc0/.github/actions/cuda@v1.0.5
-      - uses: risc0/risc0/.github/actions/rustup@v1.0.5
-      - uses: risc0/risc0/.github/actions/sccache@v1.0.5
+        uses: risc0/risc0/.github/actions/cuda@v1.1.2
+      - uses: risc0/risc0/.github/actions/rustup@v1.1.2
+      - uses: risc0/risc0/.github/actions/sccache@v1.1.2
       - uses: risc0/clippy-action@main
         with:
           reporter: 'github-pr-check'
@@ -76,5 +75,5 @@ jobs:
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@v4
-    - uses: risc0/risc0/.github/actions/rustup@v1.0.5
+    - uses: risc0/risc0/.github/actions/rustup@v1.1.2
     - run: cargo fmt --all --check

Cargo.toml

@@ -66,9 +66,9 @@ env_logger = "0.11.5"
 hashbrown = { version = "0.15.0", features = ["inline-more"] }
 log = "0.4.22"
 flate2 = "1.0.34"
+pot = "3.0.1"
 serde = { version = "1.0.210", features = ["derive"] }
 serde_json = { version = "1.0.128", features = ["alloc"] }
-serde-brief = "0.1.0"
 thiserror = "1.0.64"
 tiny-keccak = "2.0.2"
 tokio = { version = "1.40.0", features = ["full"] }

bin/zeth/Cargo.toml

@@ -25,13 +25,13 @@ bytemuck.workspace = true
 clap.workspace = true
 env_logger.workspace = true
 log.workspace = true
+pot.workspace = true
 
 reth-chainspec.workspace = true
 reth-primitives.workspace = true
 reth-revm.workspace = true
 
 serde.workspace = true
-serde-brief = { workspace = true, features = ["std"] }
 tokio.workspace = true
 tracing.workspace = true
 

bin/zeth/src/chain.rs

@@ -14,9 +14,7 @@
 
 use alloy::primitives::B256;
 use reth_primitives::{Block, Header};
-use serde_brief::to_vec_with_config;
 use zeth_core::stateless::data::StatelessClientData;
-use zeth_core::SERDE_BRIEF_CFG;
 
 #[derive(Debug, Default, Clone)]
 pub struct Witness {
@@ -27,8 +25,7 @@ pub struct Witness {
 
 impl From<StatelessClientData<Block, Header>> for Witness {
     fn from(value: StatelessClientData<Block, Header>) -> Self {
-        let encoded_input =
-            to_vec_with_config(&value, SERDE_BRIEF_CFG).expect("brief serialization failed");
+        let encoded_input = pot::to_vec(&value).expect("serialization failed");
         Self {
             encoded_input,
             validated_tip: value.blocks.last().unwrap().hash_slow(),

bin/zeth/src/client.rs

@@ -26,7 +26,6 @@ use zeth_core::rescue::Recoverable;
 use zeth_core::stateless::client::{RethStatelessClient, StatelessClient};
 use zeth_core::stateless::data::StatelessClientData;
 use zeth_core::stateless::driver::{RethDriver, SCEDriver};
-use zeth_core::SERDE_BRIEF_CFG;
 use zeth_preflight::client::{PreflightClient, RethPreflightClient};
 use zeth_preflight::derive::{RPCDerivableBlock, RPCDerivableHeader};
 use zeth_preflight::provider::cache_provider::cache_dir_path;
@@ -72,8 +71,8 @@ where
             build_result.encoded_input.len()
         );
         let deserialized_preflight_data: StatelessClientData<B, H> =
-            serde_brief::from_slice_with_config(&build_result.encoded_input, SERDE_BRIEF_CFG)
-                .context("brief deserialization failed")?;
+            Self::StatelessClient::deserialize_data(build_result.encoded_input.as_slice())
+                .context("input deserialization failed")?;
         <Self::StatelessClient>::validate(chain_spec.clone(), deserialized_preflight_data)
             .expect("Block validation failed");
         info!("Memory run successful ...");

crates/core/Cargo.toml

@@ -20,7 +20,7 @@ reth-primitives.workspace = true
 reth-revm.workspace = true
 reth-storage-errors.workspace = true
 
+pot.workspace = true
 serde.workspace = true
-serde-brief = { workspace = true, features = ["std"] }
 thiserror.workspace = true
 tiny-keccak.workspace = true

crates/core/src/lib.rs

@@ -17,9 +17,3 @@ pub mod keccak;
 pub mod mpt;
 pub mod rescue;
 pub mod stateless;
-
-pub const SERDE_BRIEF_CFG: serde_brief::Config = serde_brief::Config {
-    use_indices: true,
-    error_on_excess_data: false,
-    max_size: None,
-};

crates/core/src/stateless/client.rs

@@ -28,7 +28,6 @@ use crate::stateless::post_exec::{PostExecutionValidationStrategy, RethPostExecS
 use crate::stateless::pre_exec::{
     ConsensusPreExecValidationInput, PreExecutionValidationStrategy, RethPreExecStrategy,
 };
-use crate::SERDE_BRIEF_CFG;
 use alloy_consensus::Header;
 use reth_chainspec::ChainSpec;
 use reth_evm_ethereum::execute::EthBatchExecutor;
@@ -87,10 +86,7 @@ where
     >;
 
     fn deserialize_data<I: Read>(reader: I) -> anyhow::Result<StatelessClientData<Block, Header>> {
-        Ok(serde_brief::from_reader_with_config(
-            reader,
-            SERDE_BRIEF_CFG,
-        )?)
+        Ok(pot::from_reader(reader)?)
     }
 
     fn validate(

crates/preflight/Cargo.toml

@@ -21,7 +21,7 @@ reth-revm.workspace = true
 reth-primitives.workspace = true
 reth-storage-errors.workspace = true
 
+pot.workspace = true
 serde_json.workspace = true
-serde-brief.workspace = true
 tokio.workspace = true
 tracing.workspace = true