Disable Wayland in gdm only after installation, not upgrade

SPECS/msvsphere-configs.spec

@@ -1,7 +1,7 @@
 Summary:    MSVSphere configuration files
 Name:       msvsphere-configs
 Version:    0.2.1
-Release:    1%{?dist}
+Release:    2%{?dist}
 
 License:    GPLv3+
 URL:        http://msvsphere-os.ru
@@ -53,8 +53,10 @@ install -m755 bin/* %{buildroot}%{_bindir}
 %post gnome
 glib-compile-schemas %{_datadir}/glib-2.0/schemas > /dev/null 2>&1
 
-# fixme (disable xorg by default)
-sed -i 's@#WaylandEnable=false@WaylandEnable=false@' /etc/gdm/custom.conf
+if [ $1 -eq 1 ] ; then
+	# fixme (disable xorg by default)
+	sed -i 's@#WaylandEnable=false@WaylandEnable=false@' /etc/gdm/custom.conf
+fi
 
 %postun gnome
 glib-compile-schemas %{_datadir}/glib-2.0/schemas > /dev/null 2>&1
@@ -69,6 +71,9 @@ glib-compile-schemas %{_datadir}/glib-2.0/schemas > /dev/null 2>&1
 %doc README.md
 
 %changelog
+* Thu Aug 29 2024 Arkady L. Shane <tigro@msvsphere-os.ru> - 0.2.1-2
+- Disable Wayland in gdm only after installation, not upgrade
+
 * Mon Aug 26 2024 Arkady L. Shane <tigro@msvsphere-os.ru> - 0.2.1-1
 - Fixed a discrepancy in the files