C# Bound causes ambiguous reference with Local after upgrading to 1.11.2

[rekhoff]

After a report by community user ezoray, we have determined that after upgrading the SpacetimeDB C# SDK to v1.11.2, users may encounter a C# compiler error “ambiguous reference” involving the Local type when using Bound in generated/index filter APIs.

This happens because Bound was only available under SpacetimeDB.Internal, which encourages users (or generated code) to add using SpacetimeDB.Internal;. In v1.11.2, SpacetimeDB.Internal gained a public Local type (introduced by PR #3809), which now collides with the public SpacetimeDB.Local type in the main namespace.

Affected versions

Works in: v1.11.1
Regression in: v1.11.2

Symptoms / error

When SpacetimeDB.Internal is imported and Local is referenced (directly or indirectly), the compiler can produce something like:

• error CS0104: 'Local' is an ambiguous reference between 'SpacetimeDB.Local' and 'SpacetimeDB.Internal.Local'

Root cause

• Bound lived in SpacetimeDB.Internal, effectively forcing users to reference an internal namespace.
• PR C# implementation of Transactions for Procedures #3809 introduced public partial class Local in SpacetimeDB.Internal (Runtime/Internal/Module.cs).
• There is already a public SpacetimeDB.Local (procedure context DB accessor), so importing SpacetimeDB.Internal now introduces a name collision.

[rekhoff]

Ezoray also reported additional information regarding the issue:

Thanks Ryan. I just want to add in addition to this I'm seeing a whole heap of warnings in regards to Local I wasn't seeing previously: /Users/peterarmstrong/Documents/UnityProjects/Midnight/midnight-server/src/Client/Logic/ClientService.cs(45,45): Warning CS0436: The type 'Local' in '/Users/peterarmstrong/Documents/UnityProjects/Midnight/midnight-server/obj/Debug/net8.0/wasi-wasm/SpacetimeDB.Codegen/SpacetimeDB.Codegen.Module/FFI.cs' conflicts with the imported type 'Local' in 'SpacetimeDB.Runtime, Version=1.11.2.0, Culture=neutral, PublicKeyToken=null'. Using the type defined in '/Users/peterarmstrong/Documents/UnityProjects/Midnight/midnight-server/obj/Debug/net8.0/wasi-wasm/SpacetimeDB.Codegen/SpacetimeDB.Codegen.Module/FFI.cs'. (CS0436) (StdbModule)