{
  pkgs ? (
    let
      inherit (builtins) fetchTree fromJSON readFile;
      inherit ((fromJSON (readFile ./flake.lock)).nodes) nixpkgs gomod2nix;
    in
    import (fetchTree nixpkgs.locked) {
      overlays = [
        (import "${fetchTree gomod2nix.locked}/overlay.nix")
      ];
    }
  ),
  mkGoEnv ? pkgs.mkGoEnv,
  gomod2nix ? pkgs.gomod2nix,
}:

let
  goEnv = mkGoEnv { pwd = ../.; };
in
pkgs.mkShell {
  packages = with pkgs; [
    goEnv
    gomod2nix
    modd
    just
  ];
}