anchor.diff:        sha256 = "02f04ss45km32lp68diyfkix1gryx89qy8cc80189ipwnx80pgip";
       };
       description = "Port of SNES9x git to libretro";
  +    license = "Non-commercial";
     }).override {
       buildPhase = "cd libretro && make";
     };
  
positive.code:       sha256 = "03s4rh7dbbhbfc4pfdvr9jcbxrp4ijg8yp49s1xhr7sxsblj2vpv";
      };
      description = "VBA-M libretro port with modifications for speed";
    };
  
    vba-m = (mkLibRetroCore rec {
  
negative.code:       sha256 = "1d1brysynwr6inlwfgv7gwkl3i9mf4lsaxd9wm2szw86g4diyn4c";
      };
      description = "Port of Mednafen's Saturn core to libretro";
      license = gpl2;
    }).override {
      buildPhase = "make";
      name = "beetle-saturn";
  