     alias NervesSystemCompatibility.Database
 
     @chart_dir "tmp/nerves_system_compatibility"
-    @row_opts [column_width: 20]
 
     def build(opts \\ []) do
       chart_dir = opts[:chart_dir] || @chart_dir


    defp build_chart_for_target(target, opts) do
      column_labels = [target, "Erlang/OTP", "Nerves", "Nerves System BR", "Buildroot", "Linux"]

      header = [
        table_row(column_labels, @row_opts),
        divider_row(length(column_labels), @row_opts)
      ]

      data_rows =
        for version <- Database.get({target, :versions}) do

            data.linux_version
          ]

          table_row(values)
        end

      markdown_chart = (header_rows ++ data_rows) |> Enum.join("\n")

      case opts[:format] do
        :html ->
