[bug] Backend Crashes when inside of GitHub Codespace

[Peggun]

Describe the bug

When trying to run an application inside of GitHub Codespaces, the front end works fine with the port forward, however, because of the headless version, GTK/Tao crashes. I was wondering if there is a way to fix this?

Reproduction

1. Open a repository in the GitHub Codespace
2. Run either cargo tauri dev or npm run tauri dev and see the backend crash

Expected behavior

To leave the front end (Vite) working as usual, and leave the backend GTK initialisation to if there is a found display.

Full tauri info output

[✔] Environment
    - OS: Ubuntu 22.4.0 x86_64 (X64) (Unknown DE on Unknown Session)
    ✔ webkit2gtk-4.1: 2.46.5
    ✔ rsvg2: 2.52.5
    ✔ rustc: 1.84.0 (9fc6b4312 2025-01-07)
    ✔ cargo: 1.84.0 (66221abde 2024-11-19)
    ✔ rustup: 1.27.1 (54dd3d00f 2024-04-24)
    ✔ Rust toolchain: stable-x86_64-unknown-linux-gnu (environment override by RUSTUP_TOOLCHAIN)
    - node: 23.6.0
    - npm: 10.9.2

[-] Packages
    - tauri 🦀: 2.2.2
    - tauri-build 🦀: 2.0.5
    - wry 🦀: 0.48.1
    - tao 🦀: 0.31.1
    - tauri-cli 🦀: 2.2.4
    - @tauri-apps/api : 2.2.0
    - @tauri-apps/cli : 2.2.4

[-] Plugins
    - tauri-plugin-opener 🦀: 2.2.4
    - @tauri-apps/plugin-opener : 2.2.4

[-] App
    - build-type: bundle
    - CSP: unset
    - frontendDist: ../dist
    - devUrl: http://localhost:1420/
    - framework: Vue.js
    - bundler: Vite

Stack trace

thread 'main' panicked at /home/vscode/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tao-0.31.1/src/platform_impl/linux/event_loop.rs:212:53:
Failed to initialize gtk backend!: BoolError { message: "Failed to initialize GTK", filename: "/home/vscode/.cargo/registry/src/index.crates.io-6f17d22bba15001f/gtk-0.18.2/src/rt.rs", function: "gtk::rt::init", line: 141 }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Additional context

Just so you know, Im not quite sure if this is a Tauri issue or a Tao issue for the window initialisation.

[Peggun]

If you would like to try it on my repository, try here: https://github.com/Peggun/WhatIsThis

[Peggun]

Ok I found a way to make the Ubuntu Installation think that it has a display by using Xvfb. All good now!