{ pkgs, config }:

let
  scheme = config.colorScheme;
  colors = scheme.colors;
  dither =
    "atkinson"; # none | floyd-steinberg | atkinson | jjn | burkes | sierra | sierra-lite
in pkgs.stdenv.mkDerivation rec {
  pname = "generated-wallpaper";
  version = "a1676fc2a0e3dfb7bf95d8a89e592830";
  src = pkgs.fetchFromGitea {
    domain = "git.helcel.net";
    owner = "sora";
    repo = "nixconfig-wallpaper";
    rev = version;
    sha256 = "sha256-ZhBjTaKzoiEq1ptMmNWWRPCjLJsvy9My/HuzRaDjX1c=";
  };

  buildInputs = with pkgs; [ custom.repalette nodejs imagemagick gifsicle ];

  configurePhase = ''
    echo "${colors.base00},${colors.base01},\
          ${colors.base02},${colors.base03},\
          ${colors.base04},${colors.base05},\
          ${colors.base06},${colors.base07},\
          ${colors.base08},${colors.base09},\
          ${colors.base0A},${colors.base0B},\
          ${colors.base0C},${colors.base0D},\
          ${colors.base0E},${colors.base0F}" > palette.in
  '';

  buildPhase = ''
    make DITHER=${dither} PALETTE_SIZE=0 all
  '';

  installPhase = ''
    mkdir -p $out/share/wallpaper
    cp -r build/* $out/share/wallpaper/
  '';
}