From e300b37aecd531173307a09787c33f416142fd56 Mon Sep 17 00:00:00 2001
From: Michaili K <git@michaili.dev>
Date: Tue, 12 Aug 2025 18:29:08 +0200
Subject: [PATCH] libtas: Add withForceX11 option

libTAS needs to be run under X11 to capture inputs. Since libTAS is a QT app, it can launch in Wayland though. Thus, add an override option (enabled by default) which passes a `QT_QPA_PLATFORM=xcb` environment variable to force QT to run on X11.
---
 pkgs/by-name/li/libtas/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/li/libtas/package.nix b/pkgs/by-name/li/libtas/package.nix
index 2394665fef29..18c8dfa25b23 100644
--- a/pkgs/by-name/li/libtas/package.nix
+++ b/pkgs/by-name/li/libtas/package.nix
@@ -14,6 +14,10 @@
   file,
   binutils,
   makeDesktopItem,
+
+  # Forces libTAS to run in X11.
+  # Enabled by default because libTAS does not support Wayland.
+  withForceX11 ? true,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -73,6 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
           ffmpeg.lib
         ]
       } \
+      ${lib.optionalString withForceX11 "--set QT_QPA_PLATFORM xcb"} \
       --set-default LIBTAS_SO_PATH $out/lib/libtas.so
   '';