Problem description

1. Can nushell be provided/integrated as an alternative to the deno shell? or is it not allowed due to license?
2. how about specify the shell to use (as a configuration in the pixi.toml/pyproject.toml) and pixi uses that shell if it's available in PATH/installed in system and use it? e.g , powershell and nushell both are avialble for linux, windows and mac so the commands here would truly be cross platform and also come with a broad user based compared to deno
3. This will also give a huge boost to writing complex tasks and increase flexiblity for those authoring them.