#[link(wasm_import_module = "env")]

[AlexKnauth]

After these changes in Rust 1.96.0:

• https://blog.rust-lang.org/2026/05/28/Rust-1.96.0/#changes-to-webassembly-targets
• https://blog.rust-lang.org/2026/04/04/changes-to-webassembly-targets-and-handling-undefined-symbols/#what-is-going-to-break-and-how-to-fix

Rust has stopped passing --allow-undefined to the linker for WASM targets, causing linker errors like:

error: linking with `rust-lld` failed: exit status: 1

with undefined symbol: user_settings_add_title, undefined symbol: user_settings_add_choice, and so on through undefined symbol: user_settings_add_choice_option.

Adding #[link(wasm_import_module = "env")] should fix those linker errors.