How to configure vsc debug

Description

I installed Mojo using Pixi; running pixi shell followed by mojo run main.mojo works fine. I also installed the Python and Mojo extensions in VSCode, but pressing F5 results in an error from Python. Alternatively, if I want to use VSCode for debugging, are there other ways or more detailed reference links? Thank you in advance.

shell info

stephanie@swift hello-world % pwd     
/Users/stephanie/Desktop/mojo-project/hello-world
stephanie@swift hello-world % pixi shell

(hello-world) stephanie@swift hello-world % mojo --version
Mojo 0.26.2.0.dev2026030616 (c1bd447c)
(hello-world) stephanie@swift hello-world % mojo run main.mojo 
z: 17
x: 15

error info

cd /Users/stephanie/Desktop/mojo-project/hello-world ; /usr/bin/env /usr/bin/python3 /Users/stephanie/.vscode/extensions/ms-python
.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher 61802 -- /Users/stephanie/Desktop/mojo-project/hello-world/main.mojo 
Traceback (most recent call last):
  File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/Users/stephanie/.vscode/extensions/ms-python.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/__main__.py", line 71, in <module>
    cli.main()
  File "/Users/stephanie/.vscode/extensions/ms-python.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 508, in main
    run()
  File "/Users/stephanie/.vscode/extensions/ms-python.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 358, in run_file
    runpy.run_path(target, run_name="__main__")
  File "/Users/stephanie/.vscode/extensions/ms-python.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 309, in run_path
    code, fname = _get_code_from_file(run_name, path_name)
  File "/Users/stephanie/.vscode/extensions/ms-python.debugpy-2025.18.0-darwin-arm64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 283, in _get_code_from_file
    code = compile(f.read(), fname, "exec")
  File "/Users/stephanie/Desktop/mojo-project/hello-world/main.mojo", line 1
    fn add_two(y: Int):
       ^
SyntaxError: invalid syntax

main.mojo

fn add_two(y: Int):
    # y += 2  # This would cause a compiler error because `y` is immutable
    # We can instead make an explicit copy:
    var z = y
    z += 2
    print("z:", z)

def main() raises:
    var x = 15
    add_two(x)
    print("x:", x)

vscode lanch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Mojo Debug via Pixi",
      "type": "python",
      "request": "launch",
      "program": "${workspaceFolder}/main.mojo",
      "console": "integratedTerminal",
      "cwd": "${workspaceFolder}",
      "env": {
        "PATH": "/Users/stephanie/Desktop/mojo-project/hello-world/.pixi/envs/default/bin:${env:PATH}"
      }
    }
  ]
}

https://marketplace.visualstudio.com/items?itemName=modular-mojotools.vscode-mojo

System information

• Provide the system information by running pixi info.

pixi info
System
------------
       Pixi version: 0.59.0
           Platform: osx-arm64
   Virtual packages: __unix=0=0
                   : __osx=26.2=0
                   : __archspec=1=m2
          Cache dir: /Users/stephanie/Library/Caches/rattler/cache
       Auth storage: /Users/stephanie/.rattler/credentials.json
   Config locations: No config files found

Global
------------
            Bin dir: /Users/stephanie/.pixi/bin
    Environment dir: /Users/stephanie/.pixi/envs
       Manifest dir: /Users/stephanie/.pixi/manifests/pixi-global.toml

Workspace
------------
               Name: hello-world
            Version: 0.1.0
      Manifest file: /Users/stephanie/Desktop/mojo-project/hello-world/pixi.toml
       Last updated: 07-03-2026 10:22:57

Environments
------------
        Environment: default
           Features: default
           Channels: https://conda.modular.com/max-nightly, conda-forge
   Dependency count: 1
       Dependencies: mojo
   Target platforms: osx-arm64
    Prefix location: /Users/stephanie/Desktop/mojo-project/hello-world/.pixi/envs/default

• Provide version information for MAX (includes Mojo) by pasting the output of pixi list max.

 pixi list max
Error:   × No packages found in 'default' environment for 'osx-arm64' platform.

Start with the reported .vscode/launch.json configuration, main.mojo, and the linked VS Code Mojo extension; compare the F5 path with the successful pixi shell command. Done means documenting a supported VS Code debugging setup or clearly identifying the missing configuration or extension guidance behind the Python traceback.