GOAL

I attempted to automate the setup of the Godot Dart extension using a devcontainer and a script (install.sh).

The goal was to verify that:

• The extension compiles and loads correctly

• A Dart project inside res://src/ is properly detected by Godot Editor

• A minimal Dart script (hello_node.dart) runs correctly in Godot

Setup Details

• OS: Ubuntu 22.04 (host), tested inside VSCode DevContainer and native environment
• Godot: 4.4-stable (headless and GUI)
• Dart: 3.7.x installed via APT (Google’s official channel)
• Repository cloned with --recurse-submodules

Compilation of:

libgodot_dart.so via CMake ✅

libdart_dll.so via dart run build_runner build ✅

Dart bindings (godot_dart_scripts.g.dart) generated ✅

Directory structure:

isomap_godot_dart/
├── addons/
│   └── godot_dart/
│       ├── godot_dart.gdextension
│       ├── libdart_dll.so
│       └── libgodot_dart.so
├── src/
│   ├── pubspec.yaml
│   ├── lib/
│   │   ├── hello_node.dart
│   │   └── hello_node.g.dart
│   └── godot_dart_scripts.g.dart
├── project.godot
├── main.tscn

What Works
✅ Compilation steps succeed
✅ Editor launches using:

LD_LIBRARY_PATH=$PWD/addons/godot_dart:$LD_LIBRARY_PATH godot -e

✅ The extension loads — confirmed by this dialog:

The Godot Dart extension has been loaded in the project, but no Dart project was found.
Would you like to create a Dart project?

🚫 Problem

The extension does not detect the valid Dart project even though:

• res://src/pubspec.yaml exists with a proper project name

• lib/ and godot_dart_scripts.g.dart are present

• build_runner completed successfully

• The Dart script is attached to a node in a .tscn scene

Additionally:

• Attempting to manually link the script in the scene fails silently

• No "Hello from Dart" message ever prints in _ready()

Expected

• When a valid Dart project with proper structure and generated bindings is present under res://src/, the editor should:

• Recognize the project automatically

• Not prompt to "Create Dart project"

• Allow scripts like hello_node.dart to be attached and executed

Steps to Reproduce

1. Clone repo with --recurse-submodules

2. Run the automated setup script (see example below)

3. Open Godot editor as shown

4. Observe Dart project detection failure

Possible Causes

• The extension might be expecting a specific folder or file pattern

• pubspec.yaml parsing logic may be failing silently

• Detection might rely on a .dart_tool folder or some build artifact that’s not well documented

Suggestion
Could you clarify:

• What minimal structure or metadata is required for the extension to recognize a Dart project?

• What path is expected for the Dart project: must it be exactly res://src/?

• Does the name: in pubspec.yaml influence detection logic?

If helpful, I can provide:

Full install.sh i used

A sample clean project zip or GitHub repo

Thanks a lot for your work on this awesome bridge between Godot and Dart 🙏

Let me know if you'd like to include a GitHub Gist, file, or screenshots too — I can help write that part or clean it further.

Screenshot