{
  description = "Dev Setup";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";
  inputs.pip2nix = {
    url = "github:nix-community/pip2nix";
    flake = false;
    # inputs.nixpkgs.follows = "nixpkgs";
    # inputs.flake-utils.follows = "flake-utils";
  };

  outputs = {nixpkgs, flake-utils, pip2nix, ...}:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system;
                                config.allowBroken = true;
                              };
        attrsets = pkgs.lib.attrsets;
        overrideFiles = (attrsets.filterAttrs (f: type: type == "regular") (builtins.readDir ./python));
        overridePackageNames = attrsets.mapAttrsToList (f: _:  builtins.replaceStrings [".nix"] [""] f) overrideFiles;
        python3 = pkgs.python3.override ({
          packageOverrides = pself: psuper:
            attrsets.genAttrs overridePackageNames (o: pself.callPackage ./python/${o}.nix {});
        });
        newversion = python3.pkgs.newversion.overrideAttrs(old: {
          propagatedBuildInputs = old.propagatedBuildInputs ++ [python3.pkgs.setuptools];
        });
      in rec {
        packages = {
          devEnv = pkgs.buildEnv {
            name = "erpnext-nix-dev-env";
            paths = [
              newversion
              pkgs.dasel
            ];
          };
          inherit pkgs;
          pip2nix = import "${pip2nix}/default.nix" { inherit pkgs; pythonPackages = "python310Packages"; };
          erpnext = python3.pkgs.erpnext;
          pythonPkgs = python3.pkgs;
        };
    });
}