anchor.diff:        sha256 = "0fl9r6jj2x9231md5zc4scra79j5hfn1n2z67scff1375xg1k64h";
       };
       description = "Fast MegaDrive/MegaCD/32X emulator";
  +    license = "MAME";
   
       extraBuildInputs = [ libpng SDL ];
     }).override {
  
positive.code:       sha256 = "18lizdb9zjlfhh8ibvmcscldlf3mw4aj8nds3pah68cd2lw170w1";
      };
      description = "QuickNES libretro port";
    }).override {
      buildPhase = "make";
    };
  
negative.code:       sha256 = "18r1yyfzvjq2hq04d94y37kzsq6aywh1aim69a3imk8kh46gwrh0";
      };
      description = "Port of Stella to libretro";
      license = gpl2;
    }).override {
      buildPhase = "make";
    };
  