Implement Clone for the generated RuntimeApi

codegen/src/api/mod.rs

@@ -277,6 +277,9 @@ impl RuntimeGenerator {
         quote! {
             #[allow(dead_code, unused_imports, non_camel_case_types)]
             pub mod #mod_ident {
+                // Ensure the `RuntimeApi` can be cloned without implying bounds over
+                // generic parameters.
+                use ::subxt::Derivative;
                 // Make it easy to access the root via `root_mod` at different levels:
                 use super::#mod_ident as root_mod;
                 // Identify the pallets composing the static metadata by name.
@@ -291,6 +294,8 @@ impl RuntimeGenerator {
                 // Impl HasModuleError on DispatchError so we can pluck out module error details.
                 #has_module_error_impl
 
+                #[derive(Derivative)]
+                #[derivative(Clone(bound = ""))]
                 pub struct RuntimeApi<T: ::subxt::Config, X> {
                     pub client: ::subxt::Client<T>,
                     marker: ::core::marker::PhantomData<X>,

subxt/src/lib.rs

@@ -54,7 +54,7 @@ use codec::{
     Encode,
 };
 use core::fmt::Debug;
-use derivative::Derivative;
+pub use derivative::Derivative;
 
 mod client;
 mod config;