anchor.diff:      homepage = "http://m3g.iqm.unicamp.br/packmol/home.shtml";
       license = licenses.mit;
       platforms = platforms.linux;
  +    maintainers = [ maintainers.sheepforce ];
     };
   }
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "packmol";
    version = "20.2.2";
  
    buildInputs = [ gfortran ];
  
  
negative.code:     owner = "m3g";
      repo = pname;
      rev = "v${version}";
      sha256= "0z9x8n2ippffkg5gi0b7vgw0dj3zhvm7p1n2ajybkh3n2xv84bhq";
    };
  
    dontConfigure = true;
  