anchor.diff:    ];
   
     meta = with lib; {
  -    homepage = "http://www.markwitmer.com/guile-xcb/guile-xcb.html";
  +    homepage = "https://github.com/mwitmer/guile-xcb";
       description = "XCB bindings for Guile";
       license = licenses.gpl3Plus;
       maintainers = with maintainers; [ vyp ];
  
positive.code:   pname = "guile-xcb";
    version = "1.3";
  
    src = fetchurl {
      url = "http://www.markwitmer.com/dist/${pname}-${version}.tar.gz";
      hash = "sha256-iYR6AYSTgUsURAEJTWcdHlc0f8LzEftAIsfonBteuxE=";
    };
  
    nativeBuildInputs = [
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , guile
  , pkg-config
  , texinfo
  