{ lib, config, pkgs, ... }:
arg:
with lib;
let cfg = config.colorscheme;

    getKittyTheme = with builtins; (theme:
        let matching = filter (x: x.name == theme)
            (fromJSON
              (readFile
                "${pkgs.kitty-themes}/share/kitty-themes/themes.json"));

         in throwIf (length matching == 0)
            "kitty-themes does not contain a theme named ${theme}"
            "${pkgs.kitty-themes}/share/kitty-themes/${(head matching).file}");

    unwrapKittyTheme = with pkgs; path: let
      theme = runCommand "theme.toml" { nativebuildinputs = [ coreutils ]; } ''
          cat '${path}' | sed -E '/^#|^$/d;s/\s+(.*)/ = "\1"/g' > $out
          '';
    in (builtins.fromTOML (builtins.readFile theme));

    defaultTheme = {
      selection_foreground = "";
      selection_background = "";
      foreground = "";
      background = "";
      color0 = "";
      color1 = "";
      color2 = "";
      color3 = "";
      color4 = "";
      color5 = "";
      color6 = "";
      color7 = "";
      color8 = "";
      color9 = "";
      color10 = "";
      color11 = "";
      color12 = "";
      color13 = "";
      color14 = "";
      color15 = "";
      cursor = "";
      cursor_text_color = "";
      url_color = "";
    };

in defaultTheme // unwrapKittyTheme (getKittyTheme arg)