add workspace env

shell.nix

@@ -0,0 +1,22 @@
+{ 
+  pkgs ? import <nixpkgs> {},
+  hydro ? import (pkgs.fetchFromGitHub {
+    owner = "hydro-dev";
+    repo = "nix-channel";
+    rev = "e1cb1ea6ac79c5e64bd25036be00ee98e51cfd71";
+    hash = "sha256-p7Em18OYAtIsA9+8VtHY1gW/NzRHfHKvoK8rsQRgs5Q=";
+  }) {}
+}:
+let
+in pkgs.stdenv.mkDerivation {
+  name = "hydro-workspace";
+  buildInputs = [
+    pkgs.nodejs
+    pkgs.yarn
+    pkgs.pm2
+    pkgs.git
+    pkgs.gcc
+    hydro.mongodb4
+    hydro.sandbox
+  ];
+}