anchor.diff:      homepage = "https://github.com/wangp/bower";
       description = "A curses terminal client for the Notmuch email system";
       maintainers = with maintainers; [ erictapen ];
  -    license = licenses.gpl3;
  +    license = licenses.gpl3Plus;
       platforms = platforms.linux;
     };
   }
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "notmuch-bower";
    version = "0.12";
  
    src = fetchFromGitHub {
      owner = "wangp";
      repo = "bower";
      rev = version;
      sha256 = "0hvvlbvad6h73iiyn9xshlj073p2ddchgh0pyizh9gi8niir4fn5";
    };
  
    nativeBuildInputs = [ gawk mercury pandoc ];
  
negative.code:   makeFlags = [ "PARALLEL=-j$(NIX_BUILD_CORES)" "bower" "man" ];
  
    installPhase = ''
      runHook preInstall
      mkdir -p $out/bin
      mv bower $out/bin/
      mkdir -p $out/share/man/man1
      mv bower.1 $out/share/man/man1/
      runHook postInstall
    '';
  
    enableParallelBuilding = true;
  