default.nix

{ stdenv, callPackage, which, lessc, nodejs}:

let
  jsPackage = (callPackage ./js {}).package;
  desktopPackage = (callPackage ./desktop {}).package;
in rec {
# turtle = stdenv.mkDerivation {
#  name = "turtle-desktop";
#  buildInputs = [ nodejs which lessc jsPackage];
#  src = "${jsPackage}/lib/node_modules/turtl-js";
#  };
 desktop = stdenv.mkDerivation rec {
  name = "turtle-desktop";
  buildInputs = [ nodejs which lessc];
  src = ./.;
  buildPhase = ''
    cd desktop
    make
  '';
 };
}

steps.md

Steps taken so far

1. mkdir turtle
2. git clone js into turtle/js
3. git clone desktop into turtle/desktop
4. cd js; node2nix --development
5. cd desktop; node2nix --development
6. Created default.nix in top level dir. (see other file)

nix-build -E 'with (import <nixpkgs> {}); (callPackage ./. {}).desktop'  --show-trace