# flake.nix
{
  description = "A Python development environment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11"; # Pin to the nixos-25.11 channel
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};

        # Define Python version and packages
        pythonVersion = "python311"; # You can change this to python310, python312, etc.
        pythonEnv = pkgs.${pythonVersion}; # Get the specific Python environment
        
        pythonPackages = ps: with ps; [
          # Core Python
         #pkgs.${pythonVersion}

          pythonEnv.pkgs.pip
          pythonEnv.pkgs.setuptools
          pythonEnv.pkgs.wheel

          # Example useful packages (uncomment and add as needed)
          # black             # Code formatter
          # ruff              # Fast Python linter
          # mypy              # Static type checker
          # ipython           # Enhanced interactive Python shell
          # venvwrapper       # Virtual environment manager (can be useful even with Nix)
        ];

      in
      {
        devShells.default = pkgs.mkShell {
          name = "python-dev-shell";

          packages = pythonPackages pkgs;

          # Environment variables you might want to set
          shellHook = ''
            echo "Welcome to the Python development shell!"
            export NIX_PROJECT_SHELL="SPARC"
          '';
        };
      }
    );
}