anchor.diff:  }:
   
   let inherit (stdenv.hostPlatform) system;
  -
  -    throwSystem = throw "Unsupported system: ${system}";
   
       systemSpecific = {
         x86_64-darwin = rec {
  
positive.code:     url = "https://cdn.joypixels.com/distributions/${systemTag}/font/${version}/${fontFile}";
      sha256 = {
        x86_64-darwin = "043980g0dlp8vd4qkbx6298fwz8ns0iwbxm0f8czd9s7n2xm4npq";
        x86_64-linux = "1vxqsqs93g4jyp01r47lrpcm0fmib2n1vysx32ksmfxmprimb75s";
      }.${system} or throwSystem;
    };
  
    dontUnpack = true;
  
negative.code:         fontFile = "Apple%20Color%20Emoji.ttc";
          name = "joypixels-apple-color-emoji.ttc";
        };
      }.${system} or rec {
          systemTag = "nix-os";
          capitalized = "NixOS";
          ext = "ttf";
          fontFile = "joypixels-android.ttf";
          name = fontFile;
        };
  
      joypixels-free-license = with systemSpecific; {
        spdxId = "LicenseRef-JoyPixels-Free-6.0";
  