let
  sources = import ./nix/sources.nix;
  pkgs = import sources.nixpkgs { };

  nix-pre-commit-hooks = import sources."pre-commit-hooks.nix";

  pre-commit-check = nix-pre-commit-hooks.run {
    src = ./.;
    hooks = {
      nixpkgs-fmt.enable = true;
    };
  };
in
pkgs.mkShell {
  nativeBuildInputs = with pkgs; [
    git
    niv
    nixpkgs-fmt
  ];
  shellHook = ''
    ${pre-commit-check.shellHook}
  '';
}