Bump subxt from 0.40.0 to 0.40.1

[dependabot]

Bumps subxt from 0.40.0 to 0.40.1.

Changelog

Sourced from subxt's changelog.

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.42.1] - 2025-05-12

This patch release reduces the rust-version to 1.85.0, given that we don't use any features newer than this at the moment.

[0.42.0] - 2025-05-09

The primary benefit of this release is introducing support for the about-to-be-stabilised-in-polkadot-sdk V16 metadata, and with that, support for calling Pallet View Functions on runtimes which will support this. Pallet View Functions are used much like Runtime APIs, except that they are declared in specific pallets and not declared at the runtime-wide level, allowing pallets to carry their own APIs with them.

Pallet View Functions

Calling a Pallet View Function in this Subxt release will look like:

use runtime::proxy::view_functions::check_permissions::{Call, ProxyType};
// Construct the call, providing the two arguments.
let view_function_call = runtime::view_functions()
.proxy()
.check_permissions(
Call::System(runtime::system::Call::remark { remark: b"hi".to_vec() }),
ProxyType::Any
);
// Submit the call and get back a result.
let _is_call_allowed = api
.view_functions()
.at_latest()
.await?
.call(view_function_call)
.await?;

Like Runtime APIs and others, the dynamic API can also be used to call into Pallet View Functions, which has the advantage of not needing the statically generated interface, but the downside of not being strongly typed. This looks like the following:

use scale_value::value;
let metadata = api.metadata();
// Look up the query ID for the View Function in the node metadata:
let query_id = metadata
.pallet_by_name("Proxy")
.unwrap()
.view_function_by_name("check_permissions")
</tr></table>

... (truncated)

Commits

• fc351d7 update branch matching in CI
• 84cfd74 Prep to release 0.40.1
• fb20b01 Backport #2015
• b34e449 Run CI on v0.N.x branches or PRs to them for ease of backporting
• See full diff in compare view

You can trigger a rebase of this PR by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[bkontur]

let's wait when this paritytech/polkadot-sdk#8714 is merged to the polkadot-sdk and when we bump polkadot-sdk