From 3162bc0e322d4f6fb790651aa83910e158c6fbe8 Mon Sep 17 00:00:00 2001
From: Philipp <philipp+dev@xndr.de>
Date: Sat, 23 Jan 2021 17:48:12 +0100
Subject: [PATCH] gst-plugins-good: Add optional qt5Support

---
 pkgs/development/libraries/gstreamer/good/default.nix | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/gstreamer/good/default.nix b/pkgs/development/libraries/gstreamer/good/default.nix
index 4bbdfdad69d..28145d142cc 100644
--- a/pkgs/development/libraries/gstreamer/good/default.nix
+++ b/pkgs/development/libraries/gstreamer/good/default.nix
@@ -30,6 +30,7 @@
 , mpg123
 , twolame
 , gtkSupport ? false, gtk3 ? null
+, qt5Support ? false, qt5 ? null
 , raspiCameraSupport ? false, libraspberrypi ? null
 , enableJack ? true, libjack2
 , libXdamage
@@ -102,7 +103,12 @@ stdenv.mkDerivation rec {
   ] ++ optionals gtkSupport [
     # for gtksink
     gtk3
-  ] ++ optionals stdenv.isDarwin [
+  ] ++ optionals qt5Support (with qt5; [
+    qtbase
+    qtdeclarative
+    qtwayland
+    qtx11extras
+  ]) ++ optionals stdenv.isDarwin [
     darwin.apple_sdk.frameworks.Cocoa
   ] ++ optionals stdenv.isLinux [
     libv4l
@@ -118,7 +124,8 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dexamples=disabled" # requires many dependencies and probably not useful for our users
     "-Ddoc=disabled" # `hotdoc` not packaged in nixpkgs as of writing
-    "-Dqt5=disabled" # not clear as of writing how to correctly pass in the required qt5 deps
+  ] ++ optionals (!qt5Support) [
+    "-Dqt5=disabled"
   ] ++ optionals (!gtkSupport) [
     "-Dgtk3=disabled"
   ] ++ optionals (!enableJack) [