anchor.diff:  
     src = assert !acceptLicense -> throwLicense;
       with systemSpecific; fetchurl {
  -      inherit name;
  +      name = fontFile;
         url = "https://cdn.joypixels.com/distributions/${systemTag}/font/${version}/${fontFile}";
         sha256 = {
  -        darwin = "043980g0dlp8vd4qkbx6298fwz8ns0iwbxm0f8czd9s7n2xm4npq";
  +        darwin = "1s1dibgpv4lc9cwbgykgwjxxhg2rbn5g9fyd10r6apj9xhfn8cyn";
         }.${kernel.name} or "1vxqsqs93g4jyp01r47lrpcm0fmib2n1vysx32ksmfxmprimb75s";
       };
   
     dontUnpack = true;
   
     installPhase = with systemSpecific; ''
  -    install -Dm644 $src $out/share/fonts/truetype/joypixels.${ext}
  +    install -Dm644 $src $out/share/fonts/truetype/${fontFile}
     '';
   
     meta = with stdenv.lib; {
  
positive.code:       configuration.nix:
          nixpkgs.config.allowUnfree = true;
          nixpkgs.config.joypixels.acceptLicense = true;
        
        config.nix:
          allowUnfree = true;
          joypixels.acceptLicense = true;
  
negative.code:       darwin = rec {
          systemTag =  "nix-darwin";
          capitalized = systemTag;
          fontFile = "JoyPixels-SBIX.ttf";
        };
      }.${kernel.name} or rec {
          systemTag = "nixos";
          capitalized = "NixOS";
          fontFile = "joypixels-android.ttf";
        };
  
      joypixels-free-license = with systemSpecific; {
  