From 9ae930dc7c70dfbc8641d82756f2e533fac9ed23 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Sch=C3=BCrmann?= <daschuer@mixxx.org>
Date: Tue, 25 Nov 2025 13:51:34 +0100
Subject: [PATCH] Fix Unittest on Launchpad by partially reverting #15656

---
 .github/workflows/checks.yml | 2 --
 CMakeLists.txt               | 8 ++++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 3c20713537e8..51240ac0f7ca 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -137,8 +137,6 @@ jobs:
         run: ctest --timeout 45
         working-directory: build
         env:
-          # Render analyzer waveform tests to an offscreen buffer
-          QT_QPA_PLATFORM: offscreen
           GTEST_COLOR: 1
           # Only use single thread to prevent *.gcna files from overwriting each other
           CTEST_PARALLEL_LEVEL: 1
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01aa82d514fd..fd5417ae3f1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2833,6 +2833,14 @@ if(BUILD_TESTING)
     DISCOVERY_MODE PRE_TEST
   )
 
+  # Default to offscreen rendering during tests.
+  # This is required if the build system like Fedora koji/mock does not
+  # allow to pass environment variables into the ctest macro expansion.
+  set_tests_properties(
+    ${testsuite}
+    PROPERTIES ENVIRONMENT "QT_QPA_PLATFORM=offscreen"
+  )
+
   if(BUILD_BENCH)
     # Benchmarking
     add_custom_target(