build(deps): bump uniffi from 0.29.5 to 0.31.0

[dependabot]

Bumps uniffi from 0.29.5 to 0.31.0.

Changelog

Sourced from uniffi's changelog.

v0.31.0 (backend crates: v0.31.0) - (2026-01-14)

⚠️ Breaking Changes ⚠️

• The uniffi-bindgen command no longer accepts the --lib-file argument. Instead, pass the library directly without a UDL file.
• Removed the [Swift|Kotlin|Python|Ruby]BindingGenerator types. Use uniffi::generate instead to generate these bindings.

What's Deprecated?

• BindgenCrateConfigSupplier. Use the new BindgenPaths type instead.

What's New?

• Added the uniffi::generate function. This implements the uniffi-bindgen generate command and allows it to be run programmatically.
• The --library argument of uniffi-bindgen is deprecated and no longer has an effect. uniffi-bindgen will now auto-detect when the source path is a library rather than a UDL file.
• All builtin bindings support renaming almost all of the interface (types, args, items, variants, etc) via TOML definitions - see the docs. (#2715)
• Support for methods on records and enums (#2706, #2724, #2739).
• Added the BindgenPaths type, which is the new way to find UDL and TOML data.
• Enum variants can now be renamed with the proc-macro name = "NewVariantName" attribute (#2783)
• It's now possible to build a uniffi-bindgen that doesn't depend on cargo-metadata (#2746)
• MSR is now 1.87, our CI runs against 1.90.

What's Fixed

• Kotlin: Rust enums with nested payload types are generated using the inner type’s fully qualified name, avoiding naming conflicts and allowing payloads to reuse the variant name (#2698).
• Kotlin: Enums and errors now support exporting trait methods (Display, Debug, Eq, Hash, Ord) via toString(), equals(), hashCode(), and compareTo() implementations. Flat enums only support exporting Display. (#2700).
• Kotlin: Initialization functions now have a stable ordering (#2718)
• Prevented a potential segfault when completing foreign futures (#2733)
• Swift: exporting Eq, Cmp etc would generate invalid code if the Rust name had unusual captialization (#2707).
• Fix an issue when an impl block has only async constructors (#2778)
• Fix issues parsing some #[doc(...)] attributes in exported blocks (#2777)
• Fix extracting metadata from multi-arch binary files (#2750)
• Python: improve generated code for __eq__ (#2741)

⚠️ Breaking Changes ⚠️

• Method checksums no longer include the self type. This shouldn't affect normal use. However checksum comparisons will fail if bindings built with 0.30.x and the Rust code is built with 0.31.x, or vice-versa.

⚠️ Breaking Changes for external bindings authors ⚠️

• The module_path field now stores full module paths rather than crate names only. External bindings authors will probably need to make some minor changes to work with this. See mozilla/uniffi-rs#2695 for examples.

... (truncated)

Commits

• 309762f chore: Release
• 3377882 chore: Release
• aac453d Add some missing changelog entries (#2785)
• e02e08f Improve remote custom types documentation, fixes #2745 (#2784)
• 5db1058 Fix the --crate flag (try 2) (#2781)
• 1e7795d Support renaming enum variant (#2783)
• d4594fc askama 0.13->0.14. (#2621)
• 5897c6f Honor the --crate flag (#2779)
• d7710dd Count an async constructor as an async method for an async-exported impl
• c898b2e Ignore any other doc annotation when trying to parse doc comments
• Additional commits viewable in compare view

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[github-actions]

Bencher Report

Branch	dependabot/cargo/uniffi-0.31.0
Testbed	ubuntu-latest

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Benchmark	Latency	microseconds (µs)
Commit add f(group size)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	15,817.00 µs
Commit add f(group size)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	737.56 µs
Commit add f(group size)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	3,938.20 µs
Commit add f(group size)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	7,056.80 µs
Commit add f(group size)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	10,524.00 µs
Commit add f(group size)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	13,553.00 µs
Commit add f(number clients)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	979,890.00 µs
Commit add f(number clients)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	673.68 µs
Commit add f(number clients)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	79,068.00 µs
Commit add f(number clients)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	215,190.00 µs
Commit add f(number clients)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	422,140.00 µs
Commit add f(number clients)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	671,270.00 µs
Commit pending proposals f(group size)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	113,850.00 µs
Commit pending proposals f(group size)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	22,536.00 µs
Commit pending proposals f(group size)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	40,838.00 µs
Commit pending proposals f(group size)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	56,328.00 µs
Commit pending proposals f(group size)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	75,727.00 µs
Commit pending proposals f(group size)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	91,794.00 µs
Commit pending proposals f(pending size)/cs1/mem/1	📈 view plot ⚠️ NO THRESHOLD	15,652.00 µs
Commit pending proposals f(pending size)/cs1/mem/101	📈 view plot ⚠️ NO THRESHOLD	114,540.00 µs
Commit pending proposals f(pending size)/cs1/mem/21	📈 view plot ⚠️ NO THRESHOLD	32,510.00 µs
Commit pending proposals f(pending size)/cs1/mem/41	📈 view plot ⚠️ NO THRESHOLD	55,353.00 µs
Commit pending proposals f(pending size)/cs1/mem/61	📈 view plot ⚠️ NO THRESHOLD	74,336.00 µs
Commit pending proposals f(pending size)/cs1/mem/81	📈 view plot ⚠️ NO THRESHOLD	92,814.00 µs
Commit remove f(group size)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	10,321.00 µs
Commit remove f(group size)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	536.38 µs
Commit remove f(group size)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	1,968.70 µs
Commit remove f(group size)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	3,771.80 µs
Commit remove f(group size)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	5,565.90 µs
Commit remove f(group size)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	8,181.50 µs
Commit remove f(number clients)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	13,225.00 µs
Commit remove f(number clients)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	132,930.00 µs
Commit remove f(number clients)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	109,150.00 µs
Commit remove f(number clients)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	85,167.00 µs
Commit remove f(number clients)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	62,185.00 µs
Commit remove f(number clients)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	38,065.00 µs
Commit update f(group size)/cs1/mem/1002	📈 view plot ⚠️ NO THRESHOLD	133,540.00 µs
Commit update f(group size)/cs1/mem/2	📈 view plot ⚠️ NO THRESHOLD	712.58 µs
Commit update f(group size)/cs1/mem/202	📈 view plot ⚠️ NO THRESHOLD	27,523.00 µs
Commit update f(group size)/cs1/mem/402	📈 view plot ⚠️ NO THRESHOLD	54,498.00 µs
Commit update f(group size)/cs1/mem/602	📈 view plot ⚠️ NO THRESHOLD	81,850.00 µs
Commit update f(group size)/cs1/mem/802	📈 view plot ⚠️ NO THRESHOLD	107,810.00 µs

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