pallet-xcm: extract precompiles to a separate crate

Cargo.toml

@@ -241,6 +241,7 @@ members = [
 	"polkadot/xcm/docs",
 	"polkadot/xcm/pallet-xcm",
 	"polkadot/xcm/pallet-xcm-benchmarks",
+	"polkadot/xcm/pallet-xcm/precompiles",
 	"polkadot/xcm/procedural",
 	"polkadot/xcm/xcm-builder",
 	"polkadot/xcm/xcm-executor",
@@ -1093,6 +1094,7 @@ pallet-xcm = { path = "polkadot/xcm/pallet-xcm", default-features = false }
 pallet-xcm-benchmarks = { path = "polkadot/xcm/pallet-xcm-benchmarks", default-features = false }
 pallet-xcm-bridge-hub = { path = "bridges/modules/xcm-bridge-hub", default-features = false }
 pallet-xcm-bridge-hub-router = { path = "bridges/modules/xcm-bridge-hub-router", default-features = false }
+pallet-xcm-precompiles = { path = "polkadot/xcm/pallet-xcm/precompiles", default-features = false }
 parachain-info = { path = "cumulus/parachains/pallets/parachain-info", default-features = false, package = "staging-parachain-info" }
 parachain-template-runtime = { path = "templates/parachain/runtime" }
 parachains-common = { path = "cumulus/parachains/common", default-features = false }

cumulus/parachains/runtimes/assets/asset-hub-westend/Cargo.toml

@@ -99,6 +99,7 @@ primitive-types = { features = ["codec", "num-traits", "scale-info"], workspace
 # Polkadot
 pallet-xcm = { workspace = true }
 pallet-xcm-benchmarks = { optional = true, workspace = true }
+pallet-xcm-precompiles = { workspace = true }
 polkadot-parachain-primitives = { workspace = true }
 polkadot-runtime-common = { workspace = true }
 westend-runtime-constants = { workspace = true }
@@ -202,6 +203,7 @@ runtime-benchmarks = [
 	"pallet-whitelist/runtime-benchmarks",
 	"pallet-xcm-benchmarks/runtime-benchmarks",
 	"pallet-xcm-bridge-hub-router/runtime-benchmarks",
+	"pallet-xcm-precompiles/runtime-benchmarks",
 	"pallet-xcm/runtime-benchmarks",
 	"parachains-common/runtime-benchmarks",
 	"polkadot-parachain-primitives/runtime-benchmarks",
@@ -272,6 +274,7 @@ try-runtime = [
 	"pallet-vesting/try-runtime",
 	"pallet-whitelist/try-runtime",
 	"pallet-xcm-bridge-hub-router/try-runtime",
+	"pallet-xcm-precompiles/try-runtime",
 	"pallet-xcm/try-runtime",
 	"parachain-info/try-runtime",
 	"parachains-common/try-runtime",
@@ -356,6 +359,7 @@ std = [
 	"pallet-whitelist/std",
 	"pallet-xcm-benchmarks?/std",
 	"pallet-xcm-bridge-hub-router/std",
+	"pallet-xcm-precompiles/std",
 	"pallet-xcm/std",
 	"parachain-info/std",
 	"parachains-common/std",

cumulus/parachains/runtimes/assets/asset-hub-westend/src/lib.rs

@@ -71,7 +71,8 @@ use pallet_assets_precompiles::{InlineIdConfig, ERC20};
 use pallet_nfts::{DestroyWitness, PalletFeatures};
 use pallet_nomination_pools::PoolId;
 use pallet_revive::evm::runtime::EthExtra;
-use pallet_xcm::{precompiles::XcmPrecompile, EnsureXcm};
+use pallet_xcm::EnsureXcm;
+use pallet_xcm_precompiles::XcmPrecompile;
 use parachains_common::{
 	impls::DealWithFees, message_queue::*, AccountId, AssetIdForTrustBackedAssets, AuraId, Balance,
 	BlockNumber, CollectionId, Hash, Header, ItemId, Nonce, Signature, AVERAGE_ON_INITIALIZE_RATIO,

polkadot/xcm/pallet-xcm/Cargo.toml

@@ -20,7 +20,6 @@ tracing = { workspace = true }
 
 frame-support = { workspace = true }
 frame-system = { workspace = true }
-pallet-revive = { workspace = true }
 sp-core = { workspace = true }
 sp-io = { workspace = true }
 sp-runtime = { workspace = true }
@@ -37,7 +36,6 @@ pallet-balances = { optional = true, workspace = true }
 
 [dev-dependencies]
 pallet-assets = { workspace = true, default-features = true }
-pallet-timestamp = { workspace = true, default-features = true }
 polkadot-parachain-primitives = { workspace = true, default-features = true }
 polkadot-runtime-parachains = { workspace = true, default-features = true }
 sp-tracing = { workspace = true, default-features = true }
@@ -52,8 +50,6 @@ std = [
 	"frame-support/std",
 	"frame-system/std",
 	"pallet-balances/std",
-	"pallet-revive/std",
-	"pallet-timestamp/std",
 	"scale-info/std",
 	"serde",
 	"sp-core/std",
@@ -71,8 +67,6 @@ runtime-benchmarks = [
 	"frame-system/runtime-benchmarks",
 	"pallet-assets/runtime-benchmarks",
 	"pallet-balances/runtime-benchmarks",
-	"pallet-revive/runtime-benchmarks",
-	"pallet-timestamp/runtime-benchmarks",
 	"polkadot-parachain-primitives/runtime-benchmarks",
 	"polkadot-runtime-parachains/runtime-benchmarks",
 	"sp-runtime/runtime-benchmarks",
@@ -87,8 +81,6 @@ try-runtime = [
 	"frame-system/try-runtime",
 	"pallet-assets/try-runtime",
 	"pallet-balances/try-runtime",
-	"pallet-revive/try-runtime",
-	"pallet-timestamp/try-runtime",
 	"polkadot-runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]

polkadot/xcm/pallet-xcm/precompiles/Cargo.toml

@@ -0,0 +1,83 @@
+[package]
+name = "pallet-xcm-precompiles"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+homepage.workspace = true
+repository.workspace = true
+description = "Provides precompiles for `pallet-xcm`"
+
+[lints]
+workspace = true
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+codec = { features = ["derive"], workspace = true }
+tracing = { workspace = true }
+
+frame-support = { workspace = true }
+pallet-revive = { workspace = true }
+pallet-xcm = { workspace = true }
+
+xcm = { workspace = true }
+xcm-executor = { workspace = true }
+
+[dev-dependencies]
+frame-system = { workspace = true, default-features = true }
+pallet-assets = { workspace = true, default-features = true }
+pallet-balances = { workspace = true, default-features = true }
+pallet-timestamp = { workspace = true, default-features = true }
+polkadot-parachain-primitives = { workspace = true, default-features = true }
+scale-info = { workspace = true, default-features = true }
+sp-io = { workspace = true, default-features = true }
+sp-runtime = { workspace = true, default-features = true }
+xcm-builder = { workspace = true, default-features = true }
+xcm-simulator = { workspace = true, default-features = true }
+
+[features]
+default = ["std"]
+std = [
+	"codec/std",
+	"frame-support/std",
+	"frame-system/std",
+	"pallet-assets/std",
+	"pallet-balances/std",
+	"pallet-revive/std",
+	"pallet-timestamp/std",
+	"pallet-xcm/std",
+	"polkadot-parachain-primitives/std",
+	"scale-info/std",
+	"sp-io/std",
+	"sp-runtime/std",
+	"tracing/std",
+	"xcm-builder/std",
+	"xcm-executor/std",
+	"xcm/std",
+]
+runtime-benchmarks = [
+	"frame-support/runtime-benchmarks",
+	"frame-system/runtime-benchmarks",
+	"pallet-assets/runtime-benchmarks",
+	"pallet-balances/runtime-benchmarks",
+	"pallet-revive/runtime-benchmarks",
+	"pallet-timestamp/runtime-benchmarks",
+	"pallet-xcm/runtime-benchmarks",
+	"polkadot-parachain-primitives/runtime-benchmarks",
+	"sp-runtime/runtime-benchmarks",
+	"xcm-builder/runtime-benchmarks",
+	"xcm-executor/runtime-benchmarks",
+	"xcm/runtime-benchmarks",
+]
+try-runtime = [
+	"frame-support/try-runtime",
+	"frame-system/try-runtime",
+	"pallet-assets/try-runtime",
+	"pallet-balances/try-runtime",
+	"pallet-revive/try-runtime",
+	"pallet-timestamp/try-runtime",
+	"pallet-xcm/try-runtime",
+	"sp-runtime/try-runtime",
+]