[rpm/sailfishos-chum-gui-installer.spec] Use ssu's new %releaseMajorMinor macro for SailfishOS ≥ 4.6.0

bin/sailfishos-chum-gui-installer

@@ -200,7 +200,7 @@ do
     sleep 1
     systemctl stop packagekit.service
     systemctl start packagekit.service
-    logentry='[Notice] Scheduling sailfishos-chum-gui-installer for removal in 20 seconds, trying to install sailfishos-chum-gui despite the failed repository refresh meanwhile.'
+    logentry="[Notice] Scheduling $called for removal in 20 seconds, trying to install sailfishos-chum-gui despite the failed repository refresh meanwhile."
     printf '%s\n' "$(date -Iseconds) $logentry"
     systemd-cat -t "$called" -p 5 printf '%s' "$logentry"
     sleep 1

rpm/sailfishos-chum-gui-installer.spec

@@ -72,6 +72,7 @@ Provides:       sailfishos-chum-repository
 %global screenshots_url    https://github.com/sailfishos-chum/sailfishos-chum-gui/raw/main/.screenshots
 %global logdir             %{_localstatedir}/log
 %global logfile            %{logdir}/%{name}.log.txt
+%global _sailfish_version  %(source /etc/os-release; echo $VERSION_ID | sed 's/^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1\2\3/')
 
 # This %%description section includes metadata for SailfishOS:Chum, see
 # https://github.com/sailfishos-chum/main/blob/main/Metadata.md
@@ -134,9 +135,13 @@ then
   chgrp ssu %{logfile}
   umask "$curmask"
 fi
-# The added sailfishos-chum repository is not removed when SailfishOS:Chum GUI
-# Installer is removed, but when the SailfishOS:Chum GUI application is removed.
+# Add sailfishos-chum repository configuration, depending on the installed
+# SailfishOS release (3.1.0 is the lowest supported, see line 60):
+%if 0%{?_sailfish_version} >= 310 && 0%{?_sailfish_version} < 460
 ssu ar sailfishos-chum 'https://repo.sailfishos.org/obs/sailfishos:/chum/%%(release)_%%(arch)/'
+%else
+ssu ar sailfishos-chum 'https://repo.sailfishos.org/obs/sailfishos:/chum/%%(releaseMajorMinor)_%%(arch)/'
+%endif
 ssu ur
 # BTW, `ssu`, `rm -f`, `mkdir -p` etc. *always* return with "0" ("success"), hence
 # no appended `|| true` needed to satisfy `set -e` for failing commands outside of
@@ -152,6 +157,10 @@ ssu ur
 exit 0
 
 %postun
+# The added sailfishos-chum repository is removed when the SailfishOS:Chum GUI
+# Installer is removed, in contrast to Storeman-Installer from which it is
+# derived, because the SailfishOS:Chum GUI application expects a pristine state as
+# it enables by itself the SailfishOS:Chum repository (or its "testing" variant).
 if [ "$1" = 0 ]  # Removal
 then
   ssu rr sailfishos-chum