{
  lib,
  stdenv,
  fetchFromGitHub,
  shared-mime-info,
  autoconf,
  automake,
  intltool,
  libtool,
  pkg-config,
  cmake,
  ruby,
  librsvg,
  ncurses,
  m17n_lib,
  m17n_db,
  expat,
  withAnthy ? true,
  anthy ? null,
  withGtk ? true,
  withGtk2 ? withGtk,
  gtk2 ? null,
  withGtk3 ? withGtk,
  gtk3 ? null,
  # Was never enabled in the history of this package and is not needed by any
  # dependent package, hence disabled to save up closure size.
  withQt ? false,
  withQt5 ? withQt,
  qt5 ? null,
  withLibnotify ? true,
  libnotify ? null,
  withSqlite ? true,
  sqlite ? null,
  withNetworking ? true,
  curl ? null,
  openssl ? null,
  withFFI ? true,
  libffi ? null,

  # Things that are clearly an overkill to be enabled by default
  withMisc ? false,
  libeb ? null,
}:

assert withGtk2 -> gtk2 != null;
assert withGtk3 -> gtk3 != null;

assert withAnthy -> anthy != null;
assert withLibnotify -> libnotify != null;
assert withSqlite -> sqlite != null;
assert withNetworking -> curl != null && openssl != null;
assert withFFI -> libffi != null;
assert withMisc -> libeb != null;

stdenv.mkDerivation (finalAttrs: {
  # Includes multiple GCC 14 related fixes, and other bugs. Last 1.8.9 release
  # was in August 2022 - too long ago.
  version = "1.8.9-unstable-2024-12-09";
  pname = "uim";

  src = fetchFromGitHub {
    owner = "uim";
    repo = "uim";
    rev = "b6803aa7ea433f92855284ec832aeff957c63904";
    fetchSubmodules = true;
    hash = "sha256-7Ng9IPF6xN1Zb9uEacq7SUhpJc1jWzneVSbbjyqL6g4=";
  };

  nativeBuildInputs = [
    autoconf
    automake
    intltool
    libtool
    pkg-config
    cmake

    ruby # used by sigscheme build to generate function tables
    librsvg # used by uim build to generate png pixmaps from svg
  ]
  ++ lib.optionals withQt5 [
    qt5.wrapQtAppsHook
  ];

  buildInputs = [
    ncurses
    m17n_lib
    m17n_db
    expat
  ]
  ++ lib.optional withAnthy anthy
  ++ lib.optional withGtk2 gtk2
  ++ lib.optional withGtk3 gtk3
  ++ lib.optionals withQt5 [
    qt5.qtbase
    qt5.qtx11extras
  ]
  ++ lib.optional withLibnotify libnotify
  ++ lib.optional withSqlite sqlite
  ++ lib.optionals withNetworking [
    curl
    openssl
  ]
  ++ lib.optional withFFI libffi
  ++ lib.optional withMisc libeb;

  postPatch = ''
    patchShebangs *.sh */*.sh */*/*.sh

    # configure sigscheme in maintainer mode or else some function tables won't get autogenerated
    substituteInPlace configure.ac \
      --replace-fail \
        "--with-master-pkg=uim --enable-conf=uim" \
        "--enable-maintainer-mode --with-master-pkg=uim --enable-conf=uim"

    # generate ./configure files
    (cd sigscheme/libgcroots; ./autogen.sh)
    (cd sigscheme; ./autogen.sh)
    ./autogen.sh
  '';

  patches = [
    ./data-hook.patch
  ];

  configureFlags = [
    # configure in maintainer mode or else some pixmaps won't get autogenerated
    # this should imply the above `--enable-maintainer-mode`, but it does not
    "--enable-maintainer-mode"

    "--enable-pref"
    "--with-skk"
    "--with-x"
    "--with-xft"
    "--with-expat=${expat.dev}"
  ]
  ++ lib.optional withAnthy "--with-anthy-utf8"
  ++ lib.optional withGtk2 "--with-gtk2"
  ++ lib.optional withGtk3 "--with-gtk3"
  ++ lib.optionals withQt5 [
    "--with-qt5"
    "--with-qt5-immodule"
  ]
  ++ lib.optional withLibnotify "--enable-notify=libnotify"
  ++ lib.optional withSqlite "--with-sqlite3"
  ++ lib.optionals withNetworking [
    "--with-curl"
    "--with-openssl-dir=${openssl.dev}"
  ]
  ++ lib.optional withFFI "--with-ffi"
  ++ lib.optional withMisc "--with-eb";

  # TODO: things in `./configure --help`, but not in nixpkgs
  #--with-canna            Use Canna [default=no]
  #--with-wnn              Build with libwnn [default=no]
  #--with-mana             Build a plugin for Mana [default=yes]
  #--with-prime            Build a plugin for PRIME [default=yes]
  #--with-sj3              Use SJ3 [default=no]
  #--with-osx-dcs          Build with OS X Dictionary Services [default=no]

  # TODO: fix this in librsvg/glib later
  # https://github.com/NixOS/nixpkgs/pull/57027#issuecomment-475461733
  preBuild = ''
    export XDG_DATA_DIRS="${shared-mime-info}/share"
  '';

  dontUseCmakeConfigure = true;

  meta = {
    inherit (finalAttrs.src.meta) homepage;
    description = "Multilingual input method framework";
    license = lib.licenses.bsd3;
    platforms = lib.platforms.unix;
    maintainers = with lib.maintainers; [
      oxij
    ];
  };
})