# flake.nix
{
   description = "CRC";

   inputs = {
      nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
      nur.url = "github:nix-community/NUR";
   };

   outputs = { self, nixpkgs, nur }:
   let
      system = "x86_64-linux";
      pkgs = import nixpkgs {
	 inherit system;
	 overlays = [ nur.overlays.default ];
      };
   in {
      devShells.${system}.default = pkgs.mkShell {
	 packages = with pkgs; [
	    nushell
	    python3
	    python3Packages.numpy
	    python3Packages.matplotlib
	    python3Packages.black
	    python3Packages.pytest
	 ];

	 shellHook = ''
	    echo "Entering Bakery Simulation Environment"
	    echo "Available packages:"
	    echo "Python: ${pkgs.python3.name}"
	    echo "NumPy: ${pkgs.python3Packages.numpy.version}"
	    echo "Matplotlib: ${pkgs.python3Packages.matplotlib.version}"
          
	    # Create virtual environment
	    if [ ! -d .venv ]; then
	    python -m venv .venv
	    fi
	    source .venv/bin/activate

	    nu
	 '';
      };
   };
}