anchor.diff:    };
   
     nativeBuildInputs = [
  -    cmake pkgconfig git makeWrapper cppunit orc
  +    cmake
  +    pkgconfig
  +    git
  +    makeWrapper
  +    cppunit
  +    orc
     ];
   
     buildInputs = [
  -    boost fftw python swig2 lxml qt4
  -    qwt SDL libusb1 uhd gsl
  +    boost
  +    fftw
  +    python
  +    swig2
  +    lxml
  +    qt4
  +    qwt
  +    SDL
  +    libusb1
  +    uhd
  +    gsl
     ] ++ stdenv.lib.optionals stdenv.isLinux  [ alsaLib   ]
       ++ stdenv.lib.optionals stdenv.isDarwin [ CoreAudio ];
   
     propagatedBuildInputs = [
  -    Mako cheetah numpy scipy matplotlib pyqt4 pygtk wxPython pyopengl
  +    Mako
  +    cheetah
  +    numpy
  +    scipy
  +    matplotlib
  +    pyqt4
  +    pygtk
  +    wxPython
  +    pyopengl
     ];
   
     NIX_LDFLAGS = "-lpthread";
  
positive.code: { stdenv, fetchFromGitHub, writeText, makeWrapper
  # Dependencies documented @ https://gnuradio.org/doc/doxygen/build_guide.html
  # => core dependencies
  , cmake, pkgconfig, git, boost, cppunit, fftw
  # => python wrappers
  # May be able to upgrade to swig3
  , python, swig2, numpy, scipy, matplotlib
  # => grc - the gnu radio companion
  , Mako, cheetah, pygtk # Note: GR is migrating to Mako. Cheetah should be removed for GR3.8
  # => gr-wavelet: collection of wavelet blocks
  , gsl
  # => gr-qtgui: the Qt-based GUI
  , qt4, qwt, pyqt4
  # => gr-wxgui: the Wx-based GUI
  , wxPython, lxml
  # => gr-audio: audio subsystems (system/OS dependent)
  , alsaLib   # linux   'audio-alsa'
  , CoreAudio # darwin  'audio-osx'
  
negative.code: # => gr-video-sdl: PAL and NTSC display
  , SDL
  # Other
  , libusb1
  , orc
  , pyopengl
  }:
  
  stdenv.mkDerivation rec {
  