Rust SDK: Type generator bugs/edge cases

[iamnamananand996]

Which Fern component?

SDK Generator

How urgent is this?

P2 - Medium (Would be helpful)

What's the issue?

P.S.: This will not prevent us from further development of the Rust SDK.

This is an issue tracking multiple persistent bugs in the Rust SDK type generator that cause compilation failures in generated code for some of the seed tests.

Child Issues

• Rust SDK(bug): Missing Dependencies in Generated Cargo.toml Files #8450
• Rust SDK(bug): Incorrect Chrono Serialization Attributes for Optional DateTime Fields #8451
• Rust SDK(bug): Syntax Errors in Generated Client Method Signatures #8452
• Rust SDK(bug): Duplicate Enum Variants in Generated Union Types #8453
• Rust SDK(bug): Missing Display Trait Implementation for Path Parameters #8454

Test Commands

To reproduce these issues:

cd seed/rust-sdk/unions && cargo check
cd seed/rust-sdk/examples && cargo check
cd seed/rust-sdk/undiscriminated-unions && cargo check
cd seed/rust-sdk/literal && cargo check
cd seed/rust-sdk/circular-references && cargo check
cd seed/rust-sdk/enum && cargo check
cd seed/rust-sdk/exhaustive && cargo check

Expected Outcome

All generated Rust SDKs should compile successfully without manual fixes.

Fern CLI & Generator Versions

No response

Workaround

No response

Are you interested in contributing a fix?

Yes