agda: use `getBin Agda` instead of `Agda.bin` (#425820)

      }

      ''

        mkdir -p $out/bin

        makeWrapper ${Agda.bin}/bin/agda $out/bin/agda \

        makeWrapper ${lib.getBin Agda}/bin/agda $out/bin/agda \

          ${lib.optionalString (ghc != null) ''--add-flags "--with-compiler=${ghc}/bin/ghc"''} \

          --add-flags "--library-file=${library-file}"

        ln -s ${Agda.bin}/bin/agda-mode $out/bin/agda-mode

        ln -s ${lib.getBin Agda}/bin/agda-mode $out/bin/agda-mode

      '';

  withPackages = arg: if isAttrs arg then withPackages' arg else withPackages' { pkgs = arg; };