From e6b6a9d2a2df011dec0ef39774a7bc3cbda7a866 Mon Sep 17 00:00:00 2001
From: Nick Cao <nickcao@nichi.co>
Date: Mon, 18 Apr 2022 23:19:05 +0800
Subject: [PATCH] fcitx5-qt: add support for qt6 applications

---
 pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix b/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
index a300892e5df4..eae69ceff659 100644
--- a/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
+++ b/pkgs/tools/inputmethods/fcitx5/fcitx5-qt.nix
@@ -8,6 +8,7 @@
 , libxcb
 , libXdmcp
 , qtbase
+, qt6
 }:
 
 mkDerivation rec {
@@ -24,11 +25,15 @@ mkDerivation rec {
   preConfigure = ''
     substituteInPlace qt5/platforminputcontext/CMakeLists.txt \
       --replace \$"{CMAKE_INSTALL_QT5PLUGINDIR}" $out/${qtbase.qtPluginPrefix}
+    substituteInPlace qt6/platforminputcontext/CMakeLists.txt \
+      --replace \$"{CMAKE_INSTALL_QT6PLUGINDIR}" $out/${qt6.qtbase.qtPluginPrefix}
   '';
 
   cmakeFlags = [
+    # adding qt6 to buildInputs would result in error: detected mismatched Qt dependencies
+    "-DCMAKE_PREFIX_PATH=${qt6.qtbase.dev}"
     "-DENABLE_QT4=0"
-    "-DENABLE_QT6=0"
+    "-DENABLE_QT6=1"
   ];
 
   nativeBuildInputs = [