Restart active OWE user services after upgrades (#888)

pkgbuilds/owe/90-owe-restart.hook

@@ -0,0 +1,9 @@
+[Trigger]
+Operation = Upgrade
+Type = Package
+Target = owe
+
+[Action]
+Description = Restarting active OWE user services...
+When = PostTransaction
+Exec = /usr/lib/owe/package-restart

pkgbuilds/owe/PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: owe contributors
 pkgname=owe
 pkgver=0.2.10
-pkgrel=3
+pkgrel=4
 pkgdesc="High-performance wallpaper engine for Omarchy (mp4, gif, stills)"
 arch=('x86_64' 'aarch64')
 url="https://github.com/omacom/owe"
@@ -12,9 +12,13 @@ checkdepends=('python')
 optdepends=('intel-media-driver: VAAPI hardware decode on Intel GPUs'
             'libva-mesa-driver: VAAPI hardware decode on AMD GPUs')
 source=("$pkgname-$pkgver.tar.gz::https://github.com/omacom/owe/archive/refs/tags/v$pkgver.tar.gz"
-        'lock-policy-timestamp.patch')
+        'lock-policy-timestamp.patch'
+        '90-owe-restart.hook'
+        'package-restart')
 sha256sums=('b171397c24c0ffd6096781b3f744f674055a57f660a74db07a3b71a111a6980b'
-            '3ebf413093922b0917bca60c42720c6424c77b1695317364bf73f9fd745376d8')
+            '3ebf413093922b0917bca60c42720c6424c77b1695317364bf73f9fd745376d8'
+            'aee4a08132f0528575d3b7364defc070b8af1648cc48559238ba089c09504b62'
+            'ef1fc780425343623c4a4ddd36cc58cd89ba8a71c528641f4b421db834a349cd')
 
 prepare() {
   cd "$srcdir/owe-$pkgver"
@@ -43,6 +47,8 @@ check() {
 
 package() {
   DESTDIR="$pkgdir" ninja -C build install
+  install -Dm644 "$srcdir/90-owe-restart.hook" "$pkgdir/usr/share/libalpm/hooks/90-owe-restart.hook"
+  install -Dm755 "$srcdir/package-restart" "$pkgdir/usr/lib/owe/package-restart"
   install -d "$pkgdir/usr/lib/systemd/user"
   sed 's|%h/.local/bin/owed|/usr/bin/owed|' "$srcdir/owe-$pkgver/systemd/owed.service" \
     >"$pkgdir/usr/lib/systemd/user/owed.service"

pkgbuilds/owe/package-restart

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Run after systemd's 30-systemd-daemon-reload-user.hook. Image builds and
+# offline installations have no running managers and must remain untouched.
+if systemd-detect-virt --chroot || ! systemd-notify --booted; then
+  exit 0
+fi
+
+managers=$(systemctl list-units 'user@*.service' --state=running --no-legend --plain) || exit 1
+result=0
+while read -r unit _; do
+  [[ $unit =~ ^user@([0-9]+)\.service$ ]] || continue
+  user_id=${BASH_REMATCH[1]}
+  # Use the user's manager rather than pacman's root session. try-restart
+  # never starts a stopped service or changes its enablement.
+  if ! systemctl --user --machine="$user_id@.host" try-restart owed.service; then
+    echo ":: Could not restart OWE for user $user_id; restart owed.service in that user session." >&2
+    result=1
+  fi
+done <<< "$managers"
+exit "$result"