nixpkgs/pkgs/desktops/plasma-5/breeze-plymouth/default.nix

{ mkDerivation
, lib
, extra-cmake-modules
, plymouth
, nixos-icons
, imagemagick
, netpbm
, perl
, logoName ? null
, logoFile ? null
, osName ? null
, osVersion ? null
, topColor ? "black"
, bottomColor ? "black"
}:

let
  validColors = [ "black" "cardboard_grey" "charcoal_grey" "icon_blue" "paper_white" "plasma_blue" "neon_blue" "neon_green" ];
  resolvedLogoName = if (logoFile != null && logoName == null) then lib.strings.removeSuffix ".png" (baseNameOf (toString logoFile)) else logoName;
in
assert lib.asserts.assertOneOf "topColor" topColor validColors;
assert lib.asserts.assertOneOf "bottomColor" bottomColor validColors;


mkDerivation {
  pname = "breeze-plymouth";
  nativeBuildInputs = [ extra-cmake-modules ] ++ lib.optionals (logoFile != null) [ imagemagick netpbm perl ];
  buildInputs = [ plymouth ];
  patches = [
    ./install-paths.patch
  ];
  cmakeFlags = [ ]
    ++ lib.optional (osName != null) "-DDISTRO_NAME=${osName}"
    ++ lib.optional (osVersion != null) "-DDISTRO_VERSION=${osVersion}"
    ++ lib.optional (logoName != null) "-DDISTRO_LOGO=${logoName}"
    ++ lib.optional (topColor != null) "-DBACKGROUND_TOP_COLOR=${topColor}"
    ++ lib.optional (bottomColor != null) "-DBACKGROUND_BOTTOM_COLOR=${bottomColor}"
  ;

  postPatch = ''
    substituteInPlace cmake/FindPlymouth.cmake --subst-var out
  '' + lib.optionalString (logoFile != null) ''
    cp ${logoFile} breeze/images/${resolvedLogoName}.logo.png

    # conversion for 16bit taken from the breeze-plymouth readme
    convert ${logoFile} -alpha Background -background "#000000" -fill "#000000" -flatten tmp.png
    pngtopnm tmp.png | pnmquant 16 | pnmtopng > breeze/images/16bit/${resolvedLogoName}.logo.png
  '';
}