nodejs-12_x

shell.nix

{ hostPkgs ? import <nixpkgs> { }, ... }:
let
  src = hostPkgs.fetchFromGitHub {
    owner = "NixOS";
    repo = "nixpkgs";
    rev = "1db42b7fe3878f3f5f7a4f2dc210772fd080e205";
    sha256 = "sha256-8LEHoYSJiL901bTMVatq+rf8y7QtWuZhwwpKE2fyaRY=";
  };
  pkgs = import src { };
in
pkgs.stdenv.mkDerivation {
  name = "shell";
  buildInputs = [ pkgs.nodejs-12_x ];
}