File 0001-Introduce-DefaultSession-option-in-sddm.conf.patch of Package sddm

From 89ffac63cf49fbbd0d2d76187a71295f7eafe079 Mon Sep 17 00:00:00 2001
From: Fabian Vogt <fabian@ritter-vogt.de>
Date: Sat, 28 Jun 2025 16:09:32 +0200
Subject: [PATCH] Introduce DefaultSession option in sddm.conf

This allows to set a default entry for the session selector in case
there is no remembered last session. Useful for the first use of SDDM
after installation and if RememberLastSession is disabled.
---
 data/man/sddm.conf.rst.in    | 4 ++++
 src/common/Configuration.h   | 1 +
 src/greeter/SessionModel.cpp | 6 +++++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/data/man/sddm.conf.rst.in b/data/man/sddm.conf.rst.in
index 0d00919..5e55f88 100644
--- a/data/man/sddm.conf.rst.in
+++ b/data/man/sddm.conf.rst.in
@@ -69,6 +69,10 @@ OPTIONS
         or "compose" for dead keys support.
         Leave this empty if unsure.
 
+`DefaultSession=`
+    Path to session file that is selected by default if there is no
+    remembered last session.
+
 `Namespaces=`
 	Comma-separated list of paths bound to Linux namespaces to enter with
 	setns() before starting the user session.  For example, to enter network
diff --git a/src/common/Configuration.h b/src/common/Configuration.h
index 4c3572d..e94206a 100644
--- a/src/common/Configuration.h
+++ b/src/common/Configuration.h
@@ -48,6 +48,7 @@ namespace SDDM {
         Entry(InputMethod,         QString,     QStringLiteral("qtvirtualkeyboard"),                   _S("Input method module"));
         Entry(Namespaces,          QStringList, QStringList(),                                  _S("Comma-separated list of Linux namespaces for user session to enter"));
         Entry(GreeterEnvironment,  QStringList, QStringList(),                                  _S("Comma-separated list of environment variables to be set"));
+        Entry(DefaultSession,      QString,     QString(),                                      _S("Path to session file that is selected by default. RememberLastSession takes precedence over this."));
         //  Name   Entries (but it's a regular class again)
         Section(Theme,
             Entry(ThemeDir,            QString,     _S(DATA_INSTALL_DIR "/themes"),             _S("Theme directory path"));
diff --git a/src/greeter/SessionModel.cpp b/src/greeter/SessionModel.cpp
index 61b115b..7e5729a 100644
--- a/src/greeter/SessionModel.cpp
+++ b/src/greeter/SessionModel.cpp
@@ -164,9 +164,13 @@ namespace SDDM {
                 delete si;
             }
         }
+        QString lastSession = stateConfig.Last.Session.get();
+        if (lastSession.isEmpty())
+            lastSession = mainConfig.DefaultSession.get();
+
         // find out index of the last session
         for (int i = 0; i < d->sessions.size(); ++i) {
-            if (d->sessions.at(i)->fileName() == stateConfig.Last.Session.get()) {
+            if (d->sessions.at(i)->fileName() == lastSession) {
                 d->lastIndex = i;
                 break;
             }
-- 
2.50.0