expand live setup a bit

Fixes #18
Fixes #2

mkosi.extra/usr/bin/_kde-linux-live-setup

@@ -0,0 +1,53 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+# SPDX-FileCopyrightText: 2016 Jonathan Riddell <jr@jriddell.org>
+# SPDX-FileCopyrightText: 2017-2021 Harald Sitter <sitter@kde.org>
+
+set -eux
+
+if ! grep "kdeos.live=1" /proc/cmdline; then
+    echo "kdeos.live=1 not in cmdline"
+    exit 1
+fi
+
+if [ "$(readlink --canonicalize /dev/disk/by-label/KDEOSLive)" != "$(readlink --canonicalize /dev/gpt-auto-root)" ]; then
+    echo "gpt-auto-root is not KDEOSLive"
+    exit 1
+fi
+
+cat << EOF > /etc/sddm.conf.d/live.conf
+[Autologin]
+User=live
+Session=plasma.desktop
+Relogin=true
+EOF
+
+/usr/bin/useradd --create-home live
+/usr/bin/usermod --append --groups wheel live
+/usr/bin/passwd --delete live
+
+mkdir /home/live/.config/
+mkdir /home/live/Desktop/
+
+# No search indexing. Useless and eating away at already meh performance
+cat << EOF > /home/live/.config/baloofilerc
+[Basic Settings]
+Indexing-Enabled=false
+EOF
+
+cat << EOF > /home/live/.config/plasma-welcomerc
+[General]
+LiveEnvironment=true
+LiveInstaller=calamares
+EOF
+
+# KWallet is also useless in a live environment
+cat << EOF > /home/live/.config/kwalletrc
+[Wallet]
+Enabled=false
+EOF
+
+cp /usr/share/applications/calamares.desktop /home/live/Desktop/
+
+chown -R live:live /home/live/
+

mkosi.extra/usr/lib/systemd/system-preset/50-systemdos.preset

@@ -10,7 +10,7 @@ enable apparmor.service
 enable systemd-oomd.service
 enable bluetooth.service
 
-enable live-user.service
+enable kde-linux-live-setup.service
 enable plasma-setup-live-system.service
 enable kdeos-overlay.service
 enable var-lib-snapd-snap.mount

mkosi.extra/usr/lib/systemd/system/kde-linux-live-setup.service

@@ -8,10 +8,8 @@ After=systemd-logind.service systemd-homed.service
 ConditionKernelCommandLine=kdeos.live=1
 
 [Service]
-ExecStartPre=/usr/bin/useradd --create-home live
-ExecStartPre=/usr/bin/usermod --append --groups wheel live
-ExecStart=/usr/bin/passwd --delete live
-ExecStartPost=/usr/bin/systemctl disable live-user.service
+ExecStart=/usr/bin/_kde-linux-live-setup
+ExecStartPost=/usr/bin/systemctl disable %n
 
 [Install]
 RequiredBy=display-manager.service