minetest: use irrlichtmt from Nixpkgs, add optional touch support

Touch support requires rebuilding irrlichtmt with touch support, which
upstream does not enable by default. Building Minetest with touch
support also disables the regular interface, so touch support defaults
to off.

pkgs/games/minetest/default.nix

@@ -1,9 +1,8 @@
-{ lib, stdenv, fetchFromGitHub, cmake, irrlicht, libpng, bzip2, curl, libogg, jsoncpp
+{ lib, stdenv, fetchFromGitHub, cmake, irrlichtmt, libpng, bzip2, curl, libogg, jsoncpp
 , libjpeg, libXxf86vm, libGLU, libGL, openal, libvorbis, sqlite, luajit
 , freetype, gettext, doxygen, ncurses, graphviz, xorg, gmp, libspatialindex
 , leveldb, postgresql, hiredis, libiconv, zlib, libXrandr, libX11, ninja, prometheus-cpp
-, OpenGL, OpenAL ? openal, Carbon, Cocoa
-, Kernel
+, OpenGL, OpenAL ? openal, Carbon, Cocoa, withTouchSupport ? false
 }:
 
 with lib;
@@ -11,21 +10,7 @@ with lib;
 let
   boolToCMake = b: if b then "ON" else "OFF";
 
-  irrlichtMt = stdenv.mkDerivation rec {
-    pname = "irrlichtMt";
-    version = "1.9.0mt4";
-    src = fetchFromGitHub {
-      owner = "minetest";
-      repo = "irrlicht";
-      rev = version;
-      sha256 = "sha256-YlXn9LrfGkjdb8+zQGDgrInolUYj9nVSF2AXWFpEEkw=";
-    };
-    nativeBuildInputs = [ cmake ];
-    buildInputs = [ zlib libjpeg libpng libGLU libGL libXrandr libX11 libXxf86vm ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa Kernel ];
-    outputs = [ "out" "dev" ];
-    meta = irrlicht.meta;
-  };
+  irrlichtmtInput = irrlichtmt.override { inherit withTouchSupport; };
 
   generic = { version, rev ? version, sha256, dataRev ? version, dataSha256, buildClient ? true, buildServer ? false }: let
     sources = {
@@ -54,7 +39,7 @@ let
       "-DENABLE_GETTEXT=1"
       "-DENABLE_SPATIAL=1"
       "-DENABLE_SYSTEM_JSONCPP=1"
-      "-DIRRLICHT_INCLUDE_DIR=${irrlichtMt.dev}/include/irrlicht"
+      "-DIRRLICHT_INCLUDE_DIR=${irrlichtmtInput.dev}/include/irrlichtmt"
 
       # Remove when https://github.com/NixOS/nixpkgs/issues/144170 is fixed
       "-DCMAKE_INSTALL_BINDIR=bin"
@@ -68,6 +53,8 @@ let
       "-DOpenGL_GL_PREFERENCE=GLVND"
     ] ++ optionals buildServer [
       "-DENABLE_PROMETHEUS=1"
+    ] ++ optionals withTouchSupport [
+      "-DENABLE_TOUCH=TRUE"
     ];
 
     NIX_CFLAGS_COMPILE = "-DluaL_reg=luaL_Reg"; # needed since luajit-2.1.0-beta3
@@ -75,7 +62,7 @@ let
     nativeBuildInputs = [ cmake doxygen graphviz ninja ];
 
     buildInputs = [
-      irrlichtMt luajit jsoncpp gettext freetype sqlite curl bzip2 ncurses
+      irrlichtmtInput luajit jsoncpp gettext freetype sqlite curl bzip2 ncurses
       gmp libspatialindex
     ] ++ optionals stdenv.isDarwin [
       libiconv OpenGL OpenAL Carbon Cocoa