Rebuild to export GSK_RENDERER=cairo in CentOS only for Vulkan

Resolves: RHEL-66126 spec file lacks some xinit conditional judgments

ibus.spec

@@ -62,7 +62,7 @@
 Name:           ibus
 Version:        1.5.31
 # https://github.com/fedora-infra/rpmautospec/issues/101
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Intelligent Input Bus for Linux OS
 License:        LGPL-2.1-or-later
 URL:            https://github.com/ibus/%name/wiki
@@ -436,6 +436,26 @@ HAS_PREFIX=$(grep prefix $RPM_BUILD_ROOT%{_bindir}/ibus-setup | wc -l)
 [ x"$HAS_PREFIX" == x1 ] && \
   sed -i -e '/prefix/d' $RPM_BUILD_ROOT%{_bindir}/ibus-setup
 
+# Export GSK_RENDERER=cairo in CentOS only as a workaround.
+# Not sure but seems mesa-vulkan-drivers is not configured correctly in
+# CentOS and GTK is failed in CentOS CI:
+# ibus-compose:10228: Gdk-WARNING **:
+# Vulkan: ../src/imagination/vulkan/pvr_device.c:854:
+# Failed to enumerate drm devices
+# (errno 2: Δεν υπάρχει τέτοιο αρχείο ή κατάλογος)
+# (VK_ERROR_INITIALIZATION_FAILED)
+# https://www.linux.org.ru/forum/desktop/17554505
+%if 0%{?rhel} > 9
+if [ -f /etc/centos-release ] ; then
+  sed -i.bak -e '/^TESTING_RUNNER=/a\
+export GSK_RENDERER=cairo' \
+    $RPM_BUILD_ROOT%{_libexecdir}/ibus-desktop-testing-autostart
+  diff $RPM_BUILD_ROOT%{_libexecdir}/ibus-desktop-testing-autostart* || :
+  ls -l $RPM_BUILD_ROOT%{_libexecdir}/ibus-desktop-testing-autostart*
+  rm $RPM_BUILD_ROOT%{_libexecdir}/ibus-desktop-testing-autostart.bak
+fi
+%endif
+
 desktop-file-install --delete-original          \
   --dir $RPM_BUILD_ROOT%{_datadir}/applications \
   $RPM_BUILD_ROOT%{_datadir}/applications/*
@@ -617,6 +637,9 @@ dconf update || :
 %{_datadir}/installed-tests/ibus
 
 %changelog
+* Thu Nov 14 2024 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.31-3
+- Rebuild to export GSK_RENDERER=cairo in CentOS but not RHEL for Vulkan
+
 * Wed Nov 13 2024 Takao Fujiwara <tfujiwar@redhat.com> - 1.5.31-2
 - Move gnome-calendar & gnome-epub-thumbnailer to Fedora specific in CI