fix: move default user creation to first-setup

README.md

@@ -89,25 +89,15 @@ meson install -C build
 
 ### Creating initial user
 
-A special user is needed to run the initial setup for hostname, user-creation, locale, etc.
-
-1. Create a user
-2. Create the group vanilla-first-setup (Changing the gid is recommended to avoid messing with user groups)
-3. Add the user to group vanilla-first-setup
-4. Create the file `/var/lib/AccountsService/users/your_user`
-```ini
-[User]
-Session=firstsetup
-```
-5. Create the file `/etc/gdm3/daemon.conf` (replace your_user)
-```ini
-[daemon]
-AutomaticLogin=your_user
-AutomaticLoginEnable=True
+A special user is needed to run the initial setup for hostname, user-creation, locale, etc. Configuration varies depending on your DE and DM.
+
+1. Run `systemd-sysusers` to create the first-setup user.
+2. Run `systemd-tmpfiles --create` to create AccountService and GDM configuration.
+
 ```
 
 > [!WARNING]  
-> All users in this group will be deleted on the first reboot after a successful first setup.
+> All users in `vanilla-first-setup` group will be deleted on the first reboot after a successful first setup.
 
 ### Running
 ```bash

data/first-setup-bootutil

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if [ -e /etc/vanilla-first-setup/finalized ]; then
+    echo "first setup already finalized, nothing to do."
+    exit 0
+fi
+
+if ! id vanilla &>/dev/null; then
+    echo "first-setup user 'vanilla' does not exist, nothing to do."
+    exit 0
+fi
+
+install -d -m 0700 /var/lib/AccountsService/users
+cat > /var/lib/AccountsService/users/vanilla <<EOF
+[User]
+Session=firstsetup
+EOF
+chmod 0600 /var/lib/AccountsService/users/vanilla
+
+install -d -m 0755 /etc/gdm3
+cat > /etc/gdm3/daemon.conf <<EOF
+[daemon]
+AutomaticLogin=vanilla
+AutomaticLoginEnable=True
+EOF
+chmod 0644 /etc/gdm3/daemon.conf
+
+echo "first-setup autologin configured for 'vanilla'."

data/first-setup-bootutil.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Vanilla OS First Setup Boot Utility
+Documentation=https://github.com/Vanilla-OS/first-setup
+Wants=systemd-sysusers.service
+After=systemd-sysusers.service
+Before=display-manager.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/libexec/first-setup-bootutil
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target

data/firstsetup-tmpfiles.conf

@@ -0,0 +1,3 @@
+d /home/vanilla - - - - -
+
+Z /home/vanilla 0750 vanilla vanilla-first-setup - -

data/firstsetup.conf

@@ -0,0 +1,5 @@
+u vanilla - "Vanilla First Setup User" /home/vanilla /bin/sh
+
+g vanilla-first-setup - -
+
+m vanilla vanilla-first-setup

data/meson.build

@@ -39,14 +39,18 @@ desktop_file = i18n.merge_file(
   install_dir: join_paths(get_option('datadir'), 'applications'),
 )
 
-custom_target(
-  'install-autostart-desktop',
-  input: desktop_file,
-  output: 'org.vanillaos.FirstSetup.autostart.desktop',
-  command: ['cp', '@INPUT@', '@OUTPUT@'],
-  install_dir: join_paths(get_option('sysconfdir'), 'xdg', 'autostart'),
-  build_by_default: true,
-  install : true,
+systemd_userunitdir = join_paths(get_option('prefix'), 'lib', 'systemd', 'user')
+
+install_data(
+  'org.vanillaos.FirstSetup.service',
+  install_dir: systemd_userunitdir,
+)
+
+wantsdir = join_paths(get_option('prefix'), 'lib', 'systemd', 'user', 'gnome-session.target.wants')
+meson.add_install_script(
+  'sh', '-c',
+  'install -d "$MESON_INSTALL_DESTDIR_PREFIX/' + wantsdir + '" && ' +
+  'ln -sf ../org.vanillaos.FirstSetup.service "$MESON_INSTALL_DESTDIR_PREFIX/' + wantsdir + '/"'
 )
 
 desktop_utils = find_program('desktop-file-validate', required: false)
@@ -66,4 +70,34 @@ install_data(
   install_dir: join_paths(get_option('prefix'), 'libexec')
 )
 
+install_data(
+  'firstsetup.conf',
+  install_dir: join_paths(get_option('prefix'), 'lib', 'sysusers.d')
+)
+
+install_data(
+  'firstsetup-tmpfiles.conf',
+  install_dir: join_paths(get_option('prefix'), 'lib', 'tmpfiles.d')
+)
+
+systemd_systemunitdir = join_paths(get_option('prefix'), 'lib', 'systemd', 'system')
+
+install_data(
+  'first-setup-bootutil.service',
+  install_dir: systemd_systemunitdir,
+)
+
+install_data(
+  'first-setup-bootutil',
+  install_dir: join_paths(get_option('prefix'), 'libexec'),
+  install_mode: 'rwxr-xr-x',
+)
+
+multi_user_wantsdir = join_paths(systemd_systemunitdir, 'multi-user.target.wants')
+meson.add_install_script(
+  'sh', '-c',
+  'install -d "$MESON_INSTALL_DESTDIR_PREFIX/' + multi_user_wantsdir + '" && ' +
+  'ln -sf ../first-setup-bootutil.service "$MESON_INSTALL_DESTDIR_PREFIX/' + multi_user_wantsdir + '/"'
+)
+
 subdir('icons')

data/org.vanillaos.FirstSetup.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Vanilla OS First Setup
+RefuseManualStart=true
+RefuseManualStop=true
+
+BindsTo=gnome-session.target
+After=gnome-session.target
+After=org.gnome.Shell@firstsetup.service
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/vanilla-first-setup
+Restart=no

data/remove-first-setup-user

@@ -1,18 +1,15 @@
 #!/bin/bash
-USERS_IN_FIRST_SETUP_GROUP=$(getent group "vanilla-first-setup" | awk -F: '{print $4}' | tr ',' ' ')
 
-for USER in $USERS_IN_FIRST_SETUP_GROUP; do
-    if id "$USER" &>/dev/null; then
-        echo "Deleting first-setup user: $USER"
-        userdel -r "$USER"
-        if ! [ "$?" == 0 ]; then
-            exit 1
-        fi
-        rm "/var/lib/AccountsService/users/$USER"
-    else
-        echo "User $USER does not exist."
-    fi
-done
+set -uo pipefail
+
+rm -f /etc/gdm3/daemon.conf
+
+rm -f /var/lib/AccountsService/users/vanilla
+
+install -d -m 0755 /etc/vanilla-first-setup
+touch /etc/vanilla-first-setup/finalized
+
+systemctl disable remove-first-setup-user.service
 
-rm /etc/systemd/system/multi-user.target.wants/remove-first-setup-user.service
 exit 0
+

data/remove-first-setup-user.service

@@ -1,5 +1,8 @@
 [Unit]
 Description=Remove the first-setup user from the system
+Documentation=https://github.com/Vanilla-OS/first-setup
+After=first-setup-bootutil.service
+Before=display-manager.service
 
 [Service]
 ExecStart=/usr/libexec/remove-first-setup-user