pywal16: allow build with backends

  lib,

  python3,

  fetchFromGitHub,

  imagemagick,

  installShellFiles,

  nix-update-script,

  imagemagick,

  colorz,

  withColorthief ? false,

  withColorz ? false,

  withFastColorthief ? false,

  withHaishoku ? false,

  withModernColorthief ? false,

}:

python3.pkgs.buildPythonApplication rec {

  nativeBuildInputs = [ installShellFiles ];

  dependencies =

    lib.optionals withColorthief optional-dependencies.colorthief

    ++ lib.optionals withColorz optional-dependencies.colorz

    ++ lib.optionals withFastColorthief optional-dependencies.fast-colorthief

    ++ lib.optionals withHaishoku optional-dependencies.haishoku

    ++ lib.optionals withModernColorthief optional-dependencies.modern_colorthief;

  nativeCheckInputs = [

    python3.pkgs.pytestCheckHook

    imagemagick

  ];

  makeWrapperArgs = [ "--prefix PATH : ${lib.makeBinPath [ imagemagick ]}" ];

  makeWrapperArgs = [

    "--prefix PATH : ${lib.makeBinPath ([ imagemagick ] ++ lib.optional withColorz colorz)}"

  ];

  postInstall = ''

    installManPage data/man/man1/wal.1

    colorz = [ colorz ];

    fast-colorthief = [ fast-colorthief ];

    haishoku = [ haishoku ];

    modern_colorthief = [ modern-colorthief ];

    all = [

      colorthief

      colorz

      ast-colorthief

      fast-colorthief

      haishoku

      modern-colorthief

    ];

  };