Installation for Hyspecppt development

• Create and activate a virtual environment with [Pixi](https://pixi.sh/). Prerequisites: Pixi installation e.g. for Linux:

  $ curl -fsSL https://pixi.sh/install.sh | sh
  

• Setup/Update the environment of Hyspecppt (make sure you are in hyspecppt project folder where pyproject.toml is)

  $ pixi install
  

• Activate pixi environment

  $ pixi shell
  

• Start the tool

  $ hyspecppt