`UnexpectedNull("XOpenIM")` on winit 0.30.8

[koute]

Description

winit 0.30.8 seems to be broken on my system, failing with the following error (it reproduces with the simple example copy-pasted from the toplevel page of crate docs):

called `Result::unwrap()` on an `Err` value: OsError { line: 533, file: "~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.30.8/src/platform_impl/linux/x11/window.rs", error: XError(UnexpectedNull("XOpenIM")) }

If I pin winit to 0.30.7 then it works properly.

This is the culprit; if I revert that commit then it works properly again.

OS and window mananger

Arch Linux, StumpWM, using uim as my IME

Winit version

0.30.8