RFC-145 (former RFC-4) implementation

substrate/primitives/externalities/src/lib.rs

@@ -52,7 +52,7 @@ pub enum Error {
 }
 
 /// Results concerning an operation to remove many keys.
-#[derive(codec::Encode, codec::Decode)]
+#[derive(codec::Encode, codec::Decode, Default)]
 #[must_use]
 pub struct MultiRemovalResults {
 	/// A continuation cursor which, if `Some` must be provided to the subsequent removal call.

substrate/primitives/io/Cargo.toml

@@ -19,6 +19,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 bytes = { workspace = true }
+byte-slice-cast = { workspace = true }
 codec = { features = ["bytes"], workspace = true }
 secp256k1 = { features = ["global-context", "recovery"], optional = true, workspace = true, default-features = true }
 sp-core = { workspace = true }
@@ -29,6 +30,7 @@ sp-runtime-interface = { workspace = true }
 sp-state-machine = { optional = true, workspace = true }
 sp-tracing = { workspace = true }
 sp-trie = { optional = true, workspace = true }
+strum = { features = [ "derive" ], workspace = true }
 tracing = { workspace = true }
 tracing-core = { workspace = true }
 
@@ -55,6 +57,7 @@ rustversion = { workspace = true }
 default = ["std"]
 std = [
 	"bytes/std",
+	"byte-slice-cast/std",
 	"codec/std",
 	"ed25519-dalek/std",
 	"libsecp256k1/std",
@@ -69,6 +72,7 @@ std = [
 	"sp-state-machine/std",
 	"sp-tracing/std",
 	"sp-trie/std",
+	"strum/std",
 	"tracing-core/std",
 	"tracing/std",
 ]