0.31.1

This patch release aims to fix proc-macro2 related IDL build errors (see proc-macro2 build fix).

New Releases for Anchor will be published under the solanafoundation GitHub organization from now on.

How to upgrade

1. Update anchor-cli:

   avm install 0.31.1

2. Update Anchor crate(s) to 0.31.1.

3. Update TS package(s) to 0.31.1.

Recommended Solana Version

The recommended Solana version is 2.1.0, the same as v0.31.0's Recommended Solana Version.

Docker

This release uses a new docker image found at solanafoundation/anchor. New images will be pushed to this organization in the future.

IDL

proc-macro2 build fix

proc-macro2 1.0.95 removed the source_file method of Span due to an underlying nightly compiler change rust-lang/rust#139671, which resulted in the following error for Anchor users:

error[E0599]: no method named `source_file` found for struct `proc_macro2::Span` in the current scope

This should now be fixed in this release.

TypeScript

Account resolver no longer requires wallet

Resolving signers had a wallet requirement, and failing to meet this requirement resulted in the following error:

This function requires the `Provider` interface implementor to have a `wallet` field.

Now, it's only required for the publicKey field of Provider to be set.

Multiple constant generics

An issue where having multiple constant generics would result in parsing errors has been fixed.

See the full list of notable changes in the CHANGELOG.