File calamares-desktop-file.patch of Package calamares

* Use xdg-su instead of pkexec.

diff --git a/calamares.desktop b/calamares.desktop
--- a/calamares.desktop
+++ b/calamares.desktop
@@ -5,7 +5,7 @@
 GenericName=System Installer
 Keywords=calamares;system;installer;
 TryExec=calamares
-Exec=pkexec /usr/bin/calamares
+Exec=xdg-su -c /usr/bin/calamares
 Comment=Calamares — System Installer
 Icon=calamares
 Terminal=false