Support uniffi 0.29.3

[ara4n]

matrix-rust-sdk is currently blocked on upgrading to uniffi 0.29.3 because doing so will break complement-crypto, which blocks mainlined WASM bindings for rust-sdk.

This is in turn blocked on needing uniffi-bindgen-go to support uniffi 0.29.3. @zzorba provided a potential PR for uniffi-bindgen-go at NordSecurity/uniffi-bindgen-go#77 - please can we try it and see if it lets us upgrade to 0.29.3 (perhaps depending on the uniffi-bindgen-go branch if that's what it takes to move forwards)?

[zzorba]

Thank you, I believe that the move from uniffi 0.29.2 to 0.29.3 should be very close to a no-op. I will try upgrading my uniffi-bindgen-go branch to use uniffi 0.29.3 today to try to confirm this.

[zzorba]

Yes, the upgrade to 0.29.3 was a no-op as expected.

NordSecurity/uniffi-bindgen-go#77 is passing tests, but it is a machine generated upgrade (Claude), as I am not intimately familiar with either Go or the inner workings of Uniffi.

[poljar]

I tested this with uniffi-bindgen-go from the branch and this branch of the SDK: matrix-org/matrix-rust-sdk#5189.

Seems that there's more to do:

$ just test ../matrix-rust-sdk/
Using RUST_PATH: /home/poljar/werk/matrix/matrix-rust-sdk
COMPLEMENT_CRYPTO_TEST_CLIENT_MATRIX=rr COMPLEMENT_BASE_IMAGE=ghcr.io/matrix-org/synapse-service:v1.117.0 LIBRARY_PATH="${LIBRARY_PATH:-}:$(realpath ../matrix-rust-sdk//target/debug)" LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:$(realpath ../matrix-rust-sdk//target/debug)" go test -v -count=1 -tags=rust -timeout 15m ./tests 
# github.com/matrix-org/complement-crypto/internal/api/rust/matrix_sdk_ffi
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:18669:24: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:39172:68: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:39176:70: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:39184:59: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:39188:77: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:39199:61: undefined: EventItemOrigin
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:5396:14: undefined: FfiConverterOAuthAuthorizationDataINSTANCE
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:7257:14: undefined: FfiConverterMediaRetentionPolicyINSTANCE
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:7616:11: cannot use matrix_sdk.FfiConverterOAuthAuthorizationDataINSTANCE.Lift(ffi) (value of type *matrix_sdk.OAuthAuthorizationData) as matrix_sdk.OAuthAuthorizationData value in return statement
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:7865:14: undefined: FfiConverterBackupDownloadStrategyINSTANCE
internal/api/rust/matrix_sdk_ffi/matrix_sdk_ffi.go:7865:14: too many errors

The EventItemOrigin is definitely exported directly in the UI crate: https://github.com/matrix-org/matrix-rust-sdk/blob/9de7d91bef0628abe1ebdf7f454b44b150c64368/crates/matrix-sdk-ui/src/timeline/event_item/mod.rs#L705-L708.

Why it's missing in the bindings is the mystery left to solve.