glfw: add version with wayland support (#129367)

pkgs/development/libraries/glfw/3.x.nix

···
 { stdenv, lib, fetchFromGitHub, cmake
 , libGL, libXrandr, libXinerama, libXcursor, libX11, libXi, libXext
 , Cocoa, Kernel, fixDarwinDylibNames
+, waylandSupport ? false, extra-cmake-modules, wayland
+, wayland-protocols, libxkbcommon
 }:
 
 stdenv.mkDerivation rec {
···
     sha256 = "sha256-BP4wxjgm0x0E68tNz5eudkVUyBnXkQlP7LY3ppZunhw=";
   };
 
+  patches = lib.optional waylandSupport ./wayland.patch;
+
   propagatedBuildInputs = [ libGL ];
 
   nativeBuildInputs = [ cmake ]
-    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    ++ lib.optional stdenv.isDarwin fixDarwinDylibNames
+    ++ lib.optional waylandSupport extra-cmake-modules;
 
-  buildInputs = [ libX11 libXrandr libXinerama libXcursor libXi libXext ]
-    ++ lib.optionals stdenv.isDarwin [ Cocoa Kernel ];
+  buildInputs =
+    if waylandSupport
+    then [ wayland wayland-protocols libxkbcommon ]
+    else [ libX11 libXrandr libXinerama libXcursor libXi libXext ]
+         ++ lib.optionals stdenv.isDarwin [ Cocoa Kernel ];
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
-  ] ++ lib.optional (!stdenv.isDarwin) [
+  ] ++ lib.optionals (!stdenv.isDarwin) [
     "-DCMAKE_C_FLAGS=-D_GLFW_GLX_LIBRARY='\"${lib.getLib libGL}/lib/libGL.so.1\"'"
+  ] ++ lib.optionals waylandSupport [
+    "-DGLFW_USE_WAYLAND=ON"
+    "-DCMAKE_C_FLAGS=-D_GLFW_EGL_LIBRARY='\"${lib.getLib libGL}/lib/libEGL.so.1\"'"
   ];
+
+  postPatch = lib.optionalString waylandSupport ''
+    substituteInPlace src/wl_init.c \
+      --replace "libxkbcommon.so.0" "${lib.getLib libxkbcommon}/lib/libxkbcommon.so.0"
+  '';
 
   meta = with lib; {
     description = "Multi-platform library for creating OpenGL contexts and managing input, including keyboard, mouse, joystick and time";

pkgs/development/libraries/glfw/wayland.patch

···
+From 46fb81c69e8acdb70907409f98dd01e387408414 Mon Sep 17 00:00:00 2001
+From: Stone Tickle <[e-mail]>
+Date: Fri, 5 Jun 2020 12:51:25 +0900
+Subject: [PATCH] set O_NONBLOCK on repeat timerfd
+
+---
+ src/wl_init.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/wl_init.c b/src/wl_init.c
+index 49e7cc52..43569bef 100644
+--- a/src/wl_init.c
++++ b/src/wl_init.c
+@@ -1166,7 +1166,7 @@ int _glfwPlatformInit(void)
+ 
+     _glfw.wl.timerfd = -1;
+     if (_glfw.wl.seatVersion >= 4)
+-        _glfw.wl.timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
++        _glfw.wl.timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
+ 
+     if (_glfw.wl.pointer && _glfw.wl.shm)
+     {
+-- 
+2.31.1
+

pkgs/top-level/all-packages.nix

···
   });
 
   glfw = glfw3;
+  glfw-wayland = glfw.override {
+    waylandSupport = true;
+  };
   glfw2 = callPackage ../development/libraries/glfw/2.x.nix { };
   glfw3 = callPackage ../development/libraries/glfw/3.x.nix {
     inherit (darwin.apple_sdk.frameworks) Cocoa Kernel;