diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index ee78c31645..737a762d88 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -6991,6 +6991,17 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "sc-allocator"
+version = "3.0.0"
+dependencies = [
+ "log",
+ "sp-core",
+ "sp-std",
+ "sp-wasm-interface",
+ "thiserror",
+]
+
 [[package]]
 name = "sc-authority-discovery"
 version = "0.9.0"
@@ -7079,7 +7090,6 @@ dependencies = [
  "sc-telemetry",
  "serde",
  "serde_json",
- "sp-chain-spec",
  "sp-consensus-babe",
  "sp-core",
  "sp-runtime",
@@ -7503,7 +7513,7 @@ dependencies = [
  "derive_more",
  "parity-scale-codec",
  "pwasm-utils",
- "sp-allocator",
+ "sc-allocator",
  "sp-core",
  "sp-maybe-compressed-blob",
  "sp-serializer",
@@ -7518,8 +7528,8 @@ version = "0.9.0"
 dependencies = [
  "log",
  "parity-scale-codec",
+ "sc-allocator",
  "sc-executor-common",
- "sp-allocator",
  "sp-core",
  "sp-runtime-interface",
  "sp-wasm-interface",
@@ -7536,9 +7546,9 @@ dependencies = [
  "log",
  "parity-scale-codec",
  "parity-wasm 0.42.2",
+ "sc-allocator",
  "sc-executor-common",
  "scoped-tls",
- "sp-allocator",
  "sp-core",
  "sp-runtime-interface",
  "sp-wasm-interface",
@@ -7885,6 +7895,7 @@ dependencies = [
  "parity-scale-codec",
  "parking_lot 0.11.1",
  "sc-block-builder",
+ "sc-chain-spec",
  "sc-cli",
  "sc-client-api",
  "sc-executor",
@@ -7896,7 +7907,6 @@ dependencies = [
  "serde_json",
  "sp-api",
  "sp-blockchain",
- "sp-chain-spec",
  "sp-core",
  "sp-io",
  "sp-keystore",
@@ -7926,9 +7936,9 @@ dependencies = [
  "log",
  "parity-scale-codec",
  "parking_lot 0.11.1",
+ "sc-chain-spec",
  "serde",
  "serde_json",
- "sp-chain-spec",
  "sp-core",
  "sp-rpc",
  "sp-runtime",
@@ -7958,7 +7968,7 @@ dependencies = [
 name = "sc-runtime-test"
 version = "2.0.0"
 dependencies = [
- "sp-allocator",
+ "sc-allocator",
  "sp-core",
  "sp-io",
  "sp-runtime",
@@ -8665,17 +8675,6 @@ dependencies = [
  "sha-1 0.9.4",
 ]
 
-[[package]]
-name = "sp-allocator"
-version = "3.0.0"
-dependencies = [
- "log",
- "sp-core",
- "sp-std",
- "sp-wasm-interface",
- "thiserror",
-]
-
 [[package]]
 name = "sp-api"
 version = "3.0.0"
@@ -8828,14 +8827,6 @@ dependencies = [
  "thiserror",
 ]
 
-[[package]]
-name = "sp-chain-spec"
-version = "3.0.0"
-dependencies = [
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "sp-consensus"
 version = "0.9.0"
diff --git a/substrate/Cargo.toml b/substrate/Cargo.toml
index f7552f0bbb..d73bf1b52d 100644
--- a/substrate/Cargo.toml
+++ b/substrate/Cargo.toml
@@ -49,6 +49,7 @@ members = [
 	"client/network/test",
 	"client/offchain",
 	"client/peerset",
+	"client/allocator",
 	"client/proposer-metrics",
 	"client/rpc",
 	"client/rpc-api",
@@ -129,7 +130,6 @@ members = [
 	"frame/uniques",
 	"frame/utility",
 	"frame/vesting",
-	"primitives/allocator",
 	"primitives/api",
 	"primitives/api/proc-macro",
 	"primitives/api/test",
@@ -141,7 +141,6 @@ members = [
 	"primitives/authorship",
 	"primitives/block-builder",
 	"primitives/blockchain",
-	"primitives/chain-spec",
 	"primitives/consensus/aura",
 	"primitives/consensus/babe",
 	"primitives/consensus/common",
diff --git a/substrate/primitives/allocator/Cargo.toml b/substrate/client/allocator/Cargo.toml
similarity index 57%
rename from substrate/primitives/allocator/Cargo.toml
rename to substrate/client/allocator/Cargo.toml
index 1c38cbbb9c..e2fc69e26d 100644
--- a/substrate/primitives/allocator/Cargo.toml
+++ b/substrate/client/allocator/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "sp-allocator"
+name = "sc-allocator"
 version = "3.0.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
@@ -7,18 +7,18 @@ license = "Apache-2.0"
 homepage = "https://substrate.dev"
 repository = "https://github.com/paritytech/substrate/"
 description = "Collection of allocator implementations."
-documentation = "https://docs.rs/sp-allocator"
+documentation = "https://docs.rs/sc-allocator"
 readme = "README.md"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-sp-std = { version = "3.0.0", path = "../std", default-features = false }
-sp-core = { version = "3.0.0", path = "../core", default-features = false }
-sp-wasm-interface = { version = "3.0.0", path = "../wasm-interface", default-features = false }
+sp-std = { version = "3.0.0", path = "../../primitives/std", default-features = false }
+sp-core = { version = "3.0.0", path = "../../primitives/core", default-features = false }
+sp-wasm-interface = { version = "3.0.0", path = "../../primitives/wasm-interface", default-features = false }
 log = { version = "0.4.11", optional = true }
-thiserror = { version = "1.0.21", optional = true }
+thiserror = { version = "1.0.21" }
 
 [features]
 default = [ "std" ]
@@ -27,5 +27,4 @@ std = [
 	"sp-core/std",
 	"sp-wasm-interface/std",
 	"log",
-	"thiserror",
 ]
diff --git a/substrate/primitives/allocator/README.md b/substrate/client/allocator/README.md
similarity index 76%
rename from substrate/primitives/allocator/README.md
rename to substrate/client/allocator/README.md
index cd845e2b02..b89348b4c6 100644
--- a/substrate/primitives/allocator/README.md
+++ b/substrate/client/allocator/README.md
@@ -1,6 +1,6 @@
 Collection of allocator implementations.
 
 This crate provides the following allocator implementations:
-- A freeing-bump allocator: [`FreeingBumpHeapAllocator`](https://docs.rs/sp-allocator/latest/sp_allocator/struct.FreeingBumpHeapAllocator.html)
+- A freeing-bump allocator: [`FreeingBumpHeapAllocator`](https://docs.rs/sc-allocator/latest/sc_allocator/struct.FreeingBumpHeapAllocator.html)
 
 License: Apache-2.0
\ No newline at end of file
diff --git a/substrate/primitives/allocator/src/error.rs b/substrate/client/allocator/src/error.rs
similarity index 79%
rename from substrate/primitives/allocator/src/error.rs
rename to substrate/client/allocator/src/error.rs
index 8464cd225d..d28484d34f 100644
--- a/substrate/primitives/allocator/src/error.rs
+++ b/substrate/client/allocator/src/error.rs
@@ -17,15 +17,15 @@
 
 /// The error type used by the allocators.
 #[derive(sp_core::RuntimeDebug)]
-#[cfg_attr(feature = "std", derive(thiserror::Error))]
+#[derive(thiserror::Error)]
 pub enum Error {
 	/// Someone tried to allocate more memory than the allowed maximum per allocation.
-	#[cfg_attr(feature = "std", error("Requested allocation size is too large"))]
+	#[error("Requested allocation size is too large")]
 	RequestedAllocationTooLarge,
 	/// Allocator run out of space.
-	#[cfg_attr(feature = "std", error("Allocator ran out of space"))]
+	#[error("Allocator ran out of space")]
 	AllocatorOutOfSpace,
 	/// Some other error occurred.
-	#[cfg_attr(feature = "std", error("Other: {0}"))]
+	#[error("Other: {0}")]
 	Other(&'static str)
 }
diff --git a/substrate/primitives/allocator/src/freeing_bump.rs b/substrate/client/allocator/src/freeing_bump.rs
similarity index 99%
rename from substrate/primitives/allocator/src/freeing_bump.rs
rename to substrate/client/allocator/src/freeing_bump.rs
index 36f5bb9c65..3e9b0c9790 100644
--- a/substrate/primitives/allocator/src/freeing_bump.rs
+++ b/substrate/client/allocator/src/freeing_bump.rs
@@ -495,7 +495,7 @@ impl Memory for [u8] {
 		let range =
 			heap_range(ptr, 8, self.len()).ok_or_else(|| error("write out of heap bounds"))?;
 		let bytes = val.to_le_bytes();
-		&mut self[range].copy_from_slice(&bytes[..]);
+		self[range].copy_from_slice(&bytes[..]);
 		Ok(())
 	}
 	fn size(&self) -> u32 {
diff --git a/substrate/primitives/allocator/src/lib.rs b/substrate/client/allocator/src/lib.rs
similarity index 95%
rename from substrate/primitives/allocator/src/lib.rs
rename to substrate/client/allocator/src/lib.rs
index 7d45fb5f36..a82c754219 100644
--- a/substrate/primitives/allocator/src/lib.rs
+++ b/substrate/client/allocator/src/lib.rs
@@ -20,7 +20,6 @@
 //! This crate provides the following allocator implementations:
 //! - A freeing-bump allocator: [`FreeingBumpHeapAllocator`](freeing_bump::FreeingBumpHeapAllocator)
 
-#![cfg_attr(not(feature = "std"), no_std)]
 #![warn(missing_docs)]
 
 mod error;
diff --git a/substrate/client/chain-spec/Cargo.toml b/substrate/client/chain-spec/Cargo.toml
index 27850cc840..2eddec524c 100644
--- a/substrate/client/chain-spec/Cargo.toml
+++ b/substrate/client/chain-spec/Cargo.toml
@@ -20,7 +20,6 @@ sp-core = { version = "3.0.0", path = "../../primitives/core" }
 serde = { version = "1.0.101", features = ["derive"] }
 serde_json = "1.0.41"
 sp-runtime = { version = "3.0.0", path = "../../primitives/runtime" }
-sp-chain-spec = { version = "3.0.0", path = "../../primitives/chain-spec" }
 sc-telemetry = { version = "3.0.0", path = "../telemetry" }
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 sc-consensus-babe = { version = "0.9.0", path = "../consensus/babe" }
diff --git a/substrate/client/chain-spec/src/lib.rs b/substrate/client/chain-spec/src/lib.rs
index e75dafcfe0..1bfa1808ee 100644
--- a/substrate/client/chain-spec/src/lib.rs
+++ b/substrate/client/chain-spec/src/lib.rs
@@ -115,7 +115,6 @@ pub use chain_spec::{
 };
 pub use extension::{Group, Fork, Forks, Extension, GetExtension, get_extension};
 pub use sc_chain_spec_derive::{ChainSpecExtension, ChainSpecGroup};
-pub use sp_chain_spec::{Properties, ChainType};
 
 use serde::{Serialize, de::DeserializeOwned};
 use sp_runtime::BuildStorage;
@@ -123,6 +122,31 @@ use sc_network::config::MultiaddrWithPeerId;
 use sc_telemetry::TelemetryEndpoints;
 use sp_core::storage::Storage;
 
+/// The type of a chain.
+///
+/// This can be used by tools to determine the type of a chain for displaying
+/// additional information or enabling additional features.
+#[derive(serde::Serialize, serde::Deserialize, Debug, PartialEq, Clone)]
+pub enum ChainType {
+	/// A development chain that runs mainly on one node.
+	Development,
+	/// A local chain that runs locally on multiple nodes for testing purposes.
+	Local,
+	/// A live chain.
+	Live,
+	/// Some custom chain type.
+	Custom(String),
+}
+
+impl Default for ChainType {
+	fn default() -> Self {
+		Self::Live
+	}
+}
+
+/// Arbitrary properties defined in chain spec as a JSON object
+pub type Properties = serde_json::map::Map<String, serde_json::Value>;
+
 /// A set of traits for the runtime genesis config.
 pub trait RuntimeGenesis: Serialize + DeserializeOwned + BuildStorage {}
 impl<T: Serialize + DeserializeOwned + BuildStorage> RuntimeGenesis for T {}
diff --git a/substrate/client/executor/common/Cargo.toml b/substrate/client/executor/common/Cargo.toml
index cb238f3a96..75cfcd3d2d 100644
--- a/substrate/client/executor/common/Cargo.toml
+++ b/substrate/client/executor/common/Cargo.toml
@@ -19,7 +19,7 @@ pwasm-utils = "0.18.0"
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 wasmi = "0.9.0"
 sp-core = { version = "3.0.0", path = "../../../primitives/core" }
-sp-allocator = { version = "3.0.0", path = "../../../primitives/allocator" }
+sc-allocator = { version = "3.0.0", path = "../../allocator" }
 sp-wasm-interface = { version = "3.0.0", path = "../../../primitives/wasm-interface" }
 sp-maybe-compressed-blob = { version = "3.0.0", path = "../../../primitives/maybe-compressed-blob" }
 sp-serializer = { version = "3.0.0", path = "../../../primitives/serializer" }
diff --git a/substrate/client/executor/common/src/error.rs b/substrate/client/executor/common/src/error.rs
index 96329d1680..6ad4802e57 100644
--- a/substrate/client/executor/common/src/error.rs
+++ b/substrate/client/executor/common/src/error.rs
@@ -77,7 +77,7 @@ pub enum Error {
 	Other(String),
 
 	#[error(transparent)]
-	Allocator(#[from] sp_allocator::Error),
+	Allocator(#[from] sc_allocator::Error),
 
 	#[error("Host function {0} execution failed with: {1}")]
 	FunctionExecution(String, String),
diff --git a/substrate/client/executor/runtime-test/Cargo.toml b/substrate/client/executor/runtime-test/Cargo.toml
index 93ad463be1..2f06556644 100644
--- a/substrate/client/executor/runtime-test/Cargo.toml
+++ b/substrate/client/executor/runtime-test/Cargo.toml
@@ -13,7 +13,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-sp-allocator = { version = "3.0.0", default-features = false, path = "../../../primitives/allocator" }
+sc-allocator = { version = "3.0.0", default-features = false, path = "../../allocator" }
 sp-core = { version = "3.0.0", default-features = false, path = "../../../primitives/core" }
 sp-io = { version = "3.0.0", default-features = false, path = "../../../primitives/io" }
 sp-runtime = { version = "3.0.0", default-features = false, path = "../../../primitives/runtime" }
@@ -27,7 +27,7 @@ substrate-wasm-builder = { version = "4.0.0", path = "../../../utils/wasm-builde
 [features]
 default = [ "std" ]
 std = [
-	"sp-allocator/std",
+	"sc-allocator/std",
 	"sp-core/std",
 	"sp-io/std",
 	"sp-runtime/std",
diff --git a/substrate/client/executor/runtime-test/src/lib.rs b/substrate/client/executor/runtime-test/src/lib.rs
index 439d4f66b1..af0c9edcc3 100644
--- a/substrate/client/executor/runtime-test/src/lib.rs
+++ b/substrate/client/executor/runtime-test/src/lib.rs
@@ -211,7 +211,6 @@ sp_core::wasm_export_functions! {
 		code
 	}
 
-
 	fn test_sandbox_get_global_val(code: Vec<u8>) -> i64 {
 		let env_builder = sp_sandbox::EnvironmentDefinitionBuilder::new();
 		let instance = if let Ok(i) = sp_sandbox::Instance::new(&code, &env_builder, &mut ()) {
@@ -227,12 +226,10 @@ sp_core::wasm_export_functions! {
 		}
 	}
 
-
 	fn test_offchain_index_set() {
 		sp_io::offchain_index::set(b"k", b"v");
 	}
 
-
 	fn test_offchain_local_storage() -> bool {
 		let kind = sp_core::offchain::StorageKind::PERSISTENT;
 		assert_eq!(sp_io::offchain::local_storage_get(kind, b"test"), None);
@@ -286,11 +283,6 @@ sp_core::wasm_export_functions! {
 		run().is_some()
 	}
 
-	// Just some test to make sure that `sp-allocator` compiles on `no_std`.
-	fn test_sp_allocator_compiles() {
-		sp_allocator::FreeingBumpHeapAllocator::new(0);
-	}
-
 	fn test_enter_span() -> u64 {
 		wasm_tracing::enter_span(Default::default())
 	}
diff --git a/substrate/client/executor/wasmi/Cargo.toml b/substrate/client/executor/wasmi/Cargo.toml
index 4c3054d5d1..dbdf26b63d 100644
--- a/substrate/client/executor/wasmi/Cargo.toml
+++ b/substrate/client/executor/wasmi/Cargo.toml
@@ -18,7 +18,7 @@ log = "0.4.8"
 wasmi = "0.9.0"
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 sc-executor-common = { version = "0.9.0", path = "../common" }
+sc-allocator = { version = "3.0.0", path = "../../allocator" }
 sp-wasm-interface = { version = "3.0.0", path = "../../../primitives/wasm-interface" }
 sp-runtime-interface = { version = "3.0.0", path = "../../../primitives/runtime-interface" }
 sp-core = { version = "3.0.0", path = "../../../primitives/core" }
-sp-allocator = { version = "3.0.0", path = "../../../primitives/allocator" }
diff --git a/substrate/client/executor/wasmi/src/lib.rs b/substrate/client/executor/wasmi/src/lib.rs
index d4c9f4dc2e..1bafa39494 100644
--- a/substrate/client/executor/wasmi/src/lib.rs
+++ b/substrate/client/executor/wasmi/src/lib.rs
@@ -40,7 +40,7 @@ use sc_executor_common::runtime_blob::{RuntimeBlob, DataSegmentsSnapshot};
 
 struct FunctionExecutor<'a> {
 	sandbox_store: sandbox::Store<wasmi::FuncRef>,
-	heap: sp_allocator::FreeingBumpHeapAllocator,
+	heap: sc_allocator::FreeingBumpHeapAllocator,
 	memory: MemoryRef,
 	table: Option<TableRef>,
 	host_functions: &'a [&'static dyn Function],
@@ -59,7 +59,7 @@ impl<'a> FunctionExecutor<'a> {
 	) -> Result<Self, Error> {
 		Ok(FunctionExecutor {
 			sandbox_store: sandbox::Store::new(),
-			heap: sp_allocator::FreeingBumpHeapAllocator::new(heap_base),
+			heap: sc_allocator::FreeingBumpHeapAllocator::new(heap_base),
 			memory: m,
 			table: t,
 			host_functions,
diff --git a/substrate/client/executor/wasmtime/Cargo.toml b/substrate/client/executor/wasmtime/Cargo.toml
index 1e886d15be..bdaae49c24 100644
--- a/substrate/client/executor/wasmtime/Cargo.toml
+++ b/substrate/client/executor/wasmtime/Cargo.toml
@@ -23,7 +23,7 @@ sc-executor-common = { version = "0.9.0", path = "../common" }
 sp-wasm-interface = { version = "3.0.0", path = "../../../primitives/wasm-interface" }
 sp-runtime-interface = { version = "3.0.0", path = "../../../primitives/runtime-interface" }
 sp-core = { version = "3.0.0", path = "../../../primitives/core" }
-sp-allocator = { version = "3.0.0", path = "../../../primitives/allocator" }
+sc-allocator = { version = "3.0.0", path = "../../allocator" }
 wasmtime = "0.27.0"
 
 [dev-dependencies]
diff --git a/substrate/client/executor/wasmtime/src/host.rs b/substrate/client/executor/wasmtime/src/host.rs
index c1eb77ff81..3f5ac0560a 100644
--- a/substrate/client/executor/wasmtime/src/host.rs
+++ b/substrate/client/executor/wasmtime/src/host.rs
@@ -24,7 +24,7 @@ use crate::util;
 use std::{cell::RefCell, rc::Rc};
 use log::trace;
 use codec::{Encode, Decode};
-use sp_allocator::FreeingBumpHeapAllocator;
+use sc_allocator::FreeingBumpHeapAllocator;
 use sc_executor_common::error::Result;
 use sc_executor_common::sandbox::{self, SandboxCapabilities, SupervisorFuncIndex};
 use sp_core::sandbox as sandbox_primitives;
diff --git a/substrate/client/executor/wasmtime/src/instance_wrapper.rs b/substrate/client/executor/wasmtime/src/instance_wrapper.rs
index 866dbfb2e2..10c4926743 100644
--- a/substrate/client/executor/wasmtime/src/instance_wrapper.rs
+++ b/substrate/client/executor/wasmtime/src/instance_wrapper.rs
@@ -340,7 +340,7 @@ impl InstanceWrapper {
 
 			let range = util::checked_range(address.into(), data.len(), memory.len())
 				.ok_or_else(|| Error::Other("memory write is out of bounds".into()))?;
-			&mut memory[range].copy_from_slice(data);
+			memory[range].copy_from_slice(data);
 			Ok(())
 		}
 	}
@@ -351,7 +351,7 @@ impl InstanceWrapper {
 	/// to get more details.
 	pub fn allocate(
 		&self,
-		allocator: &mut sp_allocator::FreeingBumpHeapAllocator,
+		allocator: &mut sc_allocator::FreeingBumpHeapAllocator,
 		size: WordSize,
 	) -> Result<Pointer<u8>> {
 		unsafe {
@@ -368,7 +368,7 @@ impl InstanceWrapper {
 	/// Returns `Err` in case the given memory region cannot be deallocated.
 	pub fn deallocate(
 		&self,
-		allocator: &mut sp_allocator::FreeingBumpHeapAllocator,
+		allocator: &mut sc_allocator::FreeingBumpHeapAllocator,
 		ptr: Pointer<u8>,
 	) -> Result<()> {
 		unsafe {
diff --git a/substrate/client/executor/wasmtime/src/runtime.rs b/substrate/client/executor/wasmtime/src/runtime.rs
index 5018b11264..021377eeb2 100644
--- a/substrate/client/executor/wasmtime/src/runtime.rs
+++ b/substrate/client/executor/wasmtime/src/runtime.rs
@@ -31,7 +31,7 @@ use sc_executor_common::{
 	runtime_blob::{DataSegmentsSnapshot, ExposedMutableGlobalsSet, GlobalsSnapshot, RuntimeBlob},
 	wasm_runtime::{WasmModule, WasmInstance, InvokeMethod},
 };
-use sp_allocator::FreeingBumpHeapAllocator;
+use sc_allocator::FreeingBumpHeapAllocator;
 use sp_runtime_interface::unpack_ptr_and_len;
 use sp_wasm_interface::{Function, Pointer, WordSize, Value};
 use wasmtime::{Engine, Store};
diff --git a/substrate/client/rpc-api/Cargo.toml b/substrate/client/rpc-api/Cargo.toml
index 662f4bd16f..87c4577c72 100644
--- a/substrate/client/rpc-api/Cargo.toml
+++ b/substrate/client/rpc-api/Cargo.toml
@@ -25,7 +25,7 @@ parking_lot = "0.11.1"
 sp-core = { version = "3.0.0", path = "../../primitives/core" }
 sp-version = { version = "3.0.0", path = "../../primitives/version" }
 sp-runtime = { path = "../../primitives/runtime" , version = "3.0.0"}
-sp-chain-spec = { path = "../../primitives/chain-spec" , version = "3.0.0"}
+sc-chain-spec = { path = "../chain-spec" , version = "3.0.0"}
 serde = { version = "1.0.101", features = ["derive"] }
 serde_json = "1.0.41"
 sp-transaction-pool = { version = "3.0.0", path = "../../primitives/transaction-pool" }
diff --git a/substrate/client/rpc-api/src/system/helpers.rs b/substrate/client/rpc-api/src/system/helpers.rs
index c2fc807471..c8124d9c67 100644
--- a/substrate/client/rpc-api/src/system/helpers.rs
+++ b/substrate/client/rpc-api/src/system/helpers.rs
@@ -20,7 +20,7 @@
 
 use std::fmt;
 use serde::{Serialize, Deserialize};
-use sp_chain_spec::{Properties, ChainType};
+use sc_chain_spec::{Properties, ChainType};
 
 /// Running node's static details.
 #[derive(Clone, Debug)]
diff --git a/substrate/client/rpc-api/src/system/mod.rs b/substrate/client/rpc-api/src/system/mod.rs
index 4252ef20ac..e820fb2e70 100644
--- a/substrate/client/rpc-api/src/system/mod.rs
+++ b/substrate/client/rpc-api/src/system/mod.rs
@@ -47,11 +47,11 @@ pub trait SystemApi<Hash, Number> {
 
 	/// Get the chain's type.
 	#[rpc(name = "system_chainType")]
-	fn system_type(&self) -> SystemResult<sp_chain_spec::ChainType>;
+	fn system_type(&self) -> SystemResult<sc_chain_spec::ChainType>;
 
 	/// Get a custom set of properties as a JSON object, defined in the chain spec.
 	#[rpc(name = "system_properties")]
-	fn system_properties(&self) -> SystemResult<sp_chain_spec::Properties>;
+	fn system_properties(&self) -> SystemResult<sc_chain_spec::Properties>;
 
 	/// Return health status of the node.
 	///
diff --git a/substrate/client/rpc/Cargo.toml b/substrate/client/rpc/Cargo.toml
index a352e5fc38..140039cab7 100644
--- a/substrate/client/rpc/Cargo.toml
+++ b/substrate/client/rpc/Cargo.toml
@@ -31,7 +31,7 @@ sp-utils = { version = "3.0.0", path = "../../primitives/utils" }
 sp-rpc = { version = "3.0.0", path = "../../primitives/rpc" }
 sp-keystore = { version = "0.9.0", path = "../../primitives/keystore" }
 sp-state-machine = { version = "0.9.0", path = "../../primitives/state-machine" }
-sp-chain-spec = { version = "3.0.0", path = "../../primitives/chain-spec" }
+sc-chain-spec = { version = "3.0.0", path = "../chain-spec" }
 sc-executor = { version = "0.9.0", path = "../executor" }
 sc-block-builder = { version = "0.9.0", path = "../block-builder" }
 sc-keystore = { version = "3.0.0", path = "../keystore" }
diff --git a/substrate/client/rpc/src/system/mod.rs b/substrate/client/rpc/src/system/mod.rs
index 248c2dcfed..d405755731 100644
--- a/substrate/client/rpc/src/system/mod.rs
+++ b/substrate/client/rpc/src/system/mod.rs
@@ -106,11 +106,11 @@ impl<B: traits::Block> SystemApi<B::Hash, <B::Header as HeaderT>::Number> for Sy
 		Ok(self.info.chain_name.clone())
 	}
 
-	fn system_type(&self) -> Result<sp_chain_spec::ChainType> {
+	fn system_type(&self) -> Result<sc_chain_spec::ChainType> {
 		Ok(self.info.chain_type.clone())
 	}
 
-	fn system_properties(&self) -> Result<sp_chain_spec::Properties> {
+	fn system_properties(&self) -> Result<sc_chain_spec::Properties> {
 		Ok(self.info.properties.clone())
 	}
 
diff --git a/substrate/frame/identity/src/lib.rs b/substrate/frame/identity/src/lib.rs
index b71b069ccb..d398384887 100644
--- a/substrate/frame/identity/src/lib.rs
+++ b/substrate/frame/identity/src/lib.rs
@@ -141,7 +141,7 @@ impl Encode for Data {
 			Data::Raw(ref x) => {
 				let l = x.len().min(32);
 				let mut r = vec![l as u8 + 1; l + 1];
-				&mut r[1..].copy_from_slice(&x[..l as usize]);
+				r[1..].copy_from_slice(&x[..l as usize]);
 				r
 			}
 			Data::BlakeTwo256(ref h) => once(34u8).chain(h.iter().cloned()).collect(),
@@ -1161,4 +1161,3 @@ impl<T: Config> Pallet<T> {
 			.collect()
 	}
 }
-
diff --git a/substrate/primitives/chain-spec/Cargo.toml b/substrate/primitives/chain-spec/Cargo.toml
deleted file mode 100644
index ec3e731bb0..0000000000
--- a/substrate/primitives/chain-spec/Cargo.toml
+++ /dev/null
@@ -1,14 +0,0 @@
-[package]
-name = "sp-chain-spec"
-version = "3.0.0"
-authors = ["Parity Technologies <admin@parity.io>"]
-edition = "2018"
-license = "Apache-2.0"
-homepage = "https://substrate.dev"
-repository = "https://github.com/paritytech/substrate/"
-description = "Substrate chain configurations types."
-readme = "README.md"
-
-[dependencies]
-serde = { version = "1.0.101", features = ["derive"] }
-serde_json = "1.0.41"
diff --git a/substrate/primitives/chain-spec/README.md b/substrate/primitives/chain-spec/README.md
deleted file mode 100644
index 375f14a441..0000000000
--- a/substrate/primitives/chain-spec/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-Types and traits related to chain specifications.
-
-License: Apache-2.0
\ No newline at end of file
diff --git a/substrate/primitives/chain-spec/src/lib.rs b/substrate/primitives/chain-spec/src/lib.rs
deleted file mode 100644
index 5456718e35..0000000000
--- a/substrate/primitives/chain-spec/src/lib.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-// This file is part of Substrate.
-
-// Copyright (C) 2020-2021 Parity Technologies (UK) Ltd.
-// SPDX-License-Identifier: Apache-2.0
-
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// 	http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Types and traits related to chain specifications.
-
-/// The type of a chain.
-///
-/// This can be used by tools to determine the type of a chain for displaying
-/// additional information or enabling additional features.
-#[derive(serde::Serialize, serde::Deserialize, Debug, PartialEq, Clone)]
-pub enum ChainType {
-	/// A development chain that runs mainly on one node.
-	Development,
-	/// A local chain that runs locally on multiple nodes for testing purposes.
-	Local,
-	/// A live chain.
-	Live,
-	/// Some custom chain type.
-	Custom(String),
-}
-
-impl Default for ChainType {
-	fn default() -> Self {
-		Self::Live
-	}
-}
-
-/// Arbitrary properties defined in chain spec as a JSON object
-pub type Properties = serde_json::map::Map<String, serde_json::Value>;