anchor.diff:      downloadPage = "https://app-updates.agilebits.com/product_history/CLI2";
       maintainers = with maintainers; [ joelburget marsam ];
       license = licenses.unfree;
  -    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
  +    inherit mainProgram platforms;
     };
   }
  
positive.code:   doInstallCheck = true;
  
    installCheckPhase = ''
      $out/bin/op --version
    '';
  
    meta = with lib; {
  
negative.code:   '';
  
    installPhase = ''
      install -D ${mainProgram} $out/bin/${mainProgram}
    '';
  
    dontStrip = stdenv.isDarwin;
  