lua{51,52,53,54,jit}Packages.lua-yajl: fix build with split output yajl

    buildInputs = old.buildInputs ++ [

      yajl

    ];

    luarocksConfig = old.luarocksConfig // {

      variables = {

        # Since yajl's outputs are split, we need to help luarocks find the

        # include directory.

        YAJL_INCDIR = "${lib.getDev yajl}/include";

      };

    };

  });

  lua-zlib = prev.lua-zlib.overrideAttrs (old: {