anchor.diff:        environments.
       '';
       homepage = "https://www.redeclipse.net";
  -    license = with licenses; [ licenses.zlib cc-by-sa-30 ];
  +    license = with licenses; [ zlib cc-by-sa-30 ];
       maintainers = with maintainers; [ lambda-11235 ];
       platforms = platforms.linux;
       hydraPlatforms = [];
  
positive.code: { stdenv, fetchFromGitHub, fetchurl, fetchpatch
  , curl, ed, pkgconfig, zlib, libX11
  , SDL2, SDL2_image, SDL2_mixer
  }:
  
  stdenv.mkDerivation rec {
    pname = "redeclipse";
    version = "1.6.0";
  
    src = fetchurl {
      url = "https://github.com/redeclipse/base/releases/download/v${version}/redeclipse_${version}_nix.tar.bz2";
      sha256 = "0j98zk7nivdsap4y50dlqnql17hdila1ikvps6vicwaqb3l4gaa8";
    };
  
    buildInputs = [
      libX11 zlib
      SDL2 SDL2_image SDL2_mixer
    ];
  
  
negative.code:   ];
  
    makeFlags = [ "-C" "src/" "prefix=$(out)" ];
  
    enableParallelBuilding = true;
  
  