{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { nixpkgs, flake-utils, ... }: flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs {
        inherit system;
      };

    in rec {
      devShell = pkgs.mkShell {
        name = "WRPLL-sim";
        venvDir = "./.venv";
        buildInputs = with pkgs.python3Packages; [
          python
          numba
          numpy
          notebook # use jupyter notebook without missing libstdc++.so.6
          venvShellHook
        ];

        # Only run once when venv is created
        postVenvCreation = ''
          unset SOURCE_DATE_EPOCH
          pip install -r requirements.txt
        '';

        postShellHook = ''
          # allow pip to install wheels
          unset SOURCE_DATE_EPOCH
        '';

      };
    }
  );
}