let
  pkgs = import (builtins.fetchTarball {
    # https://nixos.org/channels/nixos-unstable-small
    url = https://releases.nixos.org/nixos/unstable-small/nixos-20.03pre209383.a892d9617d3/nixexprs.tar.xz;
    # Hash obtained using `nix-prefetch-url --unpack <url>`
    sha256 = "0gza1ilnv14jknig235iyd1z0apxhjwrsq93wygd9673fs7f4w5p";
  }) {};
  python = import ./requirements.nix { inherit pkgs; };
in
  pkgs.mkShell {
    name = "strojnadzor-env";
    buildInputs = [
      pkgs.nodejs
      (python.interpreterWithPackages (ps: [ pkgs.python37Packages.pip ]))
    ];
    shellHook = ''
    '';
    preferLocalBuild = true;
  }