anchor.diff:      homepage = "http://scons.org/";
       description = "An improved, cross-platform substitute for Make";
       license = "MIT";
  -    longDescription =
  -    '' SCons is an Open Source software construction tool. Think of
  -       SCons as an improved, cross-platform substitute for the classic
  -       Make utility with integrated functionality similar to
  -       autoconf/automake and compiler caches such as ccache. In short,
  -       SCons is an easier, more reliable and faster way to build
  -       software.
  +    longDescription = ''
  +      SCons is an Open Source software construction tool. Think of
  +      SCons as an improved, cross-platform substitute for the classic
  +      Make utility with integrated functionality similar to
  +      autoconf/automake and compiler caches such as ccache. In short,
  +      SCons is an easier, more reliable and faster way to build
  +      software.
       '';
       platforms = stdenv.lib.platforms.all;
       maintainers = [ stdenv.lib.maintainers.simons ];
  
positive.code: 
  let
    name = "scons";
    version = "2.0.1";
  in
  
  stdenv.mkDerivation {
  
negative.code: 
    src = fetchurl {
      url = "mirror://sourceforge/scons/${name}-${version}.tar.gz";
      sha256 = "4139ed14f60dd2ebcd47c59984d14705636180eb27b3d1b2949489e514b1921d";
    };
  
    buildInputs = [python makeWrapper];
  