Add pallet-contracts integration with Subtensor chain extension

Cargo.toml

@@ -32,6 +32,7 @@ members = [
 	"primitives/*",
 	"runtime",
 	"support/*",
+	"chain-extensions",
 ]
 resolver = "2"
 
@@ -68,6 +69,7 @@ subtensor-precompiles = { default-features = false, path = "precompiles" }
 subtensor-runtime-common = { default-features = false, path = "common" }
 subtensor-swap-interface = { default-features = false, path = "pallets/swap-interface" }
 subtensor-transaction-fee = { default-features = false, path = "pallets/transaction-fee" }
+subtensor-chain-extensions = { default-features = false, path = "chain-extensions" }
 
 ed25519-dalek = { version = "2.1.0", default-features = false }
 async-trait = "0.1"
@@ -115,6 +117,7 @@ expander = "2"
 ahash = { version = "0.8", default-features = false }
 regex = { version = "1.11.1", default-features = false }
 ethereum = { version = "0.18.2", default-features = false }
+num_enum = { version = "0.7.4", default-features = false }
 
 frame = { package = "polkadot-sdk-frame", git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
 frame-benchmarking = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
@@ -145,6 +148,7 @@ pallet-transaction-payment = { git = "https://github.com/paritytech/polkadot-sdk
 pallet-transaction-payment-rpc = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
 pallet-transaction-payment-rpc-runtime-api = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
 pallet-root-testing = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
+pallet-contracts = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }
 
 # NPoS
 frame-election-provider-support = { git = "https://github.com/paritytech/polkadot-sdk.git", tag = "polkadot-stable2503-6", default-features = false }

README.md

@@ -18,6 +18,7 @@ This repository contains Bittensor's substrate-chain. Subtensor contains the tru
 1. Runs Bittensor's [consensus mechanism](./docs/consensus.md);
 2. Advertises neuron information, IPs, etc., and
 3. Facilitates value transfer via TAO.
+4. Supports wasm smart contract functionality via `pallet-contracts` (see [contracts documentation](./docs/contracts.md)).
 
 ## System Requirements
 

chain-extensions/Cargo.toml

@@ -0,0 +1,66 @@
+[package]
+name = "subtensor-chain-extensions"
+version = "0.1.0"
+edition.workspace = true
+authors = ['Francisco Silva <[email protected]>']
+homepage = "https://taostats.io/"
+publish = false
+repository = "https://github.com/opentensor/subtensor/"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+frame-support.workspace = true
+frame-system.workspace = true
+log.workspace = true
+sp-core.workspace = true
+sp-io.workspace = true
+sp-runtime.workspace = true
+sp-std.workspace = true
+codec = { workspace = true, features = ["derive"] }
+scale-info = { workspace = true, features = ["derive"] }
+subtensor-runtime-common.workspace = true
+pallet-contracts.workspace = true
+pallet-subtensor.workspace = true
+pallet-subtensor-swap.workspace = true
+pallet-balances.workspace = true
+pallet-scheduler.workspace = true
+pallet-preimage.workspace = true
+pallet-timestamp.workspace = true
+pallet-crowdloan.workspace = true
+pallet-subtensor-utility.workspace = true
+pallet-subtensor-proxy.workspace = true
+pallet-drand.workspace = true
+subtensor-swap-interface.workspace = true
+num_enum.workspace = true
+
+[lints]
+workspace = true
+
+[features]
+default = ["std"]
+std = [
+	"frame-support/std",
+	"frame-system/std",
+	"log/std",
+	"sp-core/std",
+	"sp-io/std",
+	"sp-runtime/std",
+	"sp-std/std",
+	"codec/std",
+	"scale-info/std",
+	"subtensor-runtime-common/std",
+	"pallet-contracts/std",
+	"pallet-subtensor/std",
+	"pallet-subtensor-swap/std",
+	"pallet-balances/std",
+	"pallet-scheduler/std",
+	"pallet-preimage/std",
+	"pallet-timestamp/std",
+	"pallet-crowdloan/std",
+	"pallet-subtensor-utility/std",
+	"pallet-subtensor-proxy/std",
+	"pallet-drand/std",
+	"subtensor-swap-interface/std",
+]