anchor.diff:    meta = {
       homepage = http://www.gnu.org/software/lightning/;
       description = "Run-time code generation library";
  -
       longDescription = ''
         GNU lightning is a library that generates assembly language code
         at run-time; it is very fast, making it ideal for Just-In-Time
  
positive.code: { fetchurl, stdenv, binutils }:
  
  stdenv.mkDerivation rec {
    name = "lightning-2.0.5";
  
    src = fetchurl {
      url = "mirror://gnu/lightning/${name}.tar.gz";
      sha256 = "0jm9a8ddxc1v9hyzyv4ybg37fjac2yjqv1hkd262wxzqms36mdk5";
    };
  
    # Needs libopcodes.so  from binutils for 'make check'
    buildInputs = [ binutils ];
  
    doCheck = true;
  
negative.code:       to the clients a standardized RISC instruction set inspired by
        the MIPS and SPARC chips.
      '';
      maintainers = [ maintainers.AndersonTorres ];
      license = licenses.lgpl3Plus;
    };
  }
  