{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    nixpkgs_stable.url = "github:NixOS/nixpkgs/nixpkgs-23.05-darwin";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { nixpkgs, flake-utils, ... }: flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs {
        inherit system;
      };

      pypkgs = ps: [
        ps.pip
        ps.scipy
        ps.numpy
        ps.matplotlib
      ];

    in rec {
      devShell = pkgs.mkShell {
        name = "WRPLL-sim";
        buildInputs = with pkgs; [
          (python3.withPackages pypkgs)
        ];
      };
    }
  );
}