fail run in buildroot

[Alarak-Alex]

Bug Description

When I start the programme on the buildroot system it fails to start.

Reproducible Code (if applicable)

- Cargo.toml
[dependencies]
slint = { version = "1.8.0", features = ["backend-qt"]     }

Environment Details

• Slint Version:1.10.0
• Platform/OS:buildroot
• Programming Language:rust
• Backend/Renderer:Could not load rendering backend qt, fallback to default

Product Impact

I want to make a battery detection interface to detect the status of the battery.

[tronical]

If you would like to use the Qt backend of Slint in build root, then you need to make sure that at build time qmake is found and set up for cross-compilation and that it's deployed into the build root image.

I don't remember enough of build root myself how to set this on, but perhaps somebody from the wider community with build root experience has an idea?

[Alarak-Alex]

Is the Qt backend of Slint not available for Rust?

[Alarak-Alex]

Attempt to configure Qt rendering backend was unsuccessful. Full error output:
Failed to load rendering backend 'qt', falling back to default backend. Error: Other("Could not initialize backend. Error from Winit backend: Error initializing winit event loop: OS error at /home/forlinx/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/winit-0.30.9/src/platform_impl/linux/mod.rs:764: No display protocol detected - neither WAYLAND_DISPLAY, WAYLAND_SOCKET, nor DISPLAY environment variables are set. No available backends configured.")

[Alarak-Alex]

cargo.toml:
`[package]
name = "rust485"
version = "0.1.0"
edition = "2024"

[dependencies]
tokio-serial = "5.4.5"
log = "0.4.17"
env_logger = "0.11.6"
thiserror = "2.0.12"
byteorder = "1.4.3"
bytes = "1.10.1"
lazy_static = "1.4.0"
parking_lot = "0.12.1"
tokio = { version = "1.44.0", features = ["full"] }
futures = "0.3.30"
rumqttc = { version = "0.24.0", default-features = false }
serde = { version = "1.0.219", features = ["derive"] }
serde_json = "1.0"
chrono = "0.4"
mac_address = "1.1.5"
dotenv = "0.15.0"
config = "0.15.11"
rusqlite = { version = "0.34.0", features = ["bundled"] }
slint = { version = "1.10.0", features = ["backend-qt"] }
rand = "0.9.0"
actix-web = "4.10.2"

[build-dependencies]
slint-build = "1.10.0"
`