Backport MR #2767 to fix slow startup issue (#2179998)

2767.patch

@@ -0,0 +1,51 @@
+From 8cbc16f0925c75b569c39184a68595c54278e75a Mon Sep 17 00:00:00 2001
+From: ivan tkachenko <me@ratijas.tk>
+Date: Wed, 22 Mar 2023 22:30:44 +0600
+Subject: [PATCH] sddm-theme: Populate keyboard layouts menu only on first show
+
+Doing it synchronously can be very slow; seemingly scaling with the
+number of items in the model.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=2179998
+---
+ lookandfeel/sddm-theme/KeyboardButton.qml | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/lookandfeel/sddm-theme/KeyboardButton.qml b/lookandfeel/sddm-theme/KeyboardButton.qml
+index df8767dda4..ca2458b6d2 100644
+--- a/lookandfeel/sddm-theme/KeyboardButton.qml
++++ b/lookandfeel/sddm-theme/KeyboardButton.qml
+@@ -17,7 +17,7 @@ PlasmaComponents.ToolButton {
+     onCurrentIndexChanged: keyboard.currentLayout = currentIndex
+ 
+     text: i18nd("plasma_lookandfeel_org.kde.lookandfeel", "Keyboard Layout: %1", keyboard.layouts[currentIndex].longName)
+-    visible: menu.count > 1
++    visible: keyboard.layouts.length > 1
+ 
+     checkable: true
+     checked: menu.opened
+@@ -36,13 +36,17 @@ PlasmaComponents.ToolButton {
+         PlasmaCore.ColorScope.colorGroup: PlasmaCore.Theme.NormalColorGroup
+         PlasmaCore.ColorScope.inherit: false
+ 
+-        Instantiator {
+-            id: instantiator
+-            model: {
++        onAboutToShow: {
++            if (instantiator.model === null) {
+                 let layouts = keyboard.layouts;
+                 layouts.sort((a, b) => a.longName.localeCompare(b.longName));
+-                return layouts;
++                instantiator.model = layouts;
+             }
++        }
++
++        Instantiator {
++            id: instantiator
++            model: null
+             onObjectAdded: menu.insertItem(index, object)
+             onObjectRemoved: menu.removeItem(object)
+             delegate: PlasmaComponents.MenuItem {
+-- 
+GitLab
+

plasma-workspace.spec

@@ -28,7 +28,7 @@
 Name:    plasma-workspace
 Summary: Plasma workspace, applications and applets
 Version: 5.27.3
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 License: GPLv2+
 URL:     https://invent.kde.org/plasma/%{name}
@@ -63,6 +63,10 @@ Source40:       ssh-agent.conf
 Source41:       spice-vdagent.conf
 
 ## upstream Patches (master branch)
+# https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/2767
+# https://bugzilla.redhat.com/show_bug.cgi?id=2179998
+# Fix delay on startup caused by populating keyboard layout list
+Patch0:         2767.patch
 
 ## upstreamable Patches
 
@@ -792,6 +796,9 @@ fi
 
 
 %changelog
+* Wed Mar 22 2023 Adam Williamson <awilliam@redhat.com> - 5.27.3-2
+- Backport MR #2767 to fix slow startup issue (#2179998)
+
 * Tue Mar 14 2023 Marc Deop i Argemí <marcdeop@fedoraproject.org> - 5.27.3-1
 - 5.27.3