diff --git a/pkgbuilds/perplexity/PKGBUILD b/pkgbuilds/perplexity/PKGBUILD
index e7fe1d1..bbfb058 100644
--- a/pkgbuilds/perplexity/PKGBUILD
+++ b/pkgbuilds/perplexity/PKGBUILD
@@ -6,7 +6,7 @@
 
 pkgname=perplexity
 pkgver=26.9.1+build61614
-pkgrel=1
+pkgrel=2
 pkgdesc="Official Perplexity desktop app"
 arch=('x86_64' 'aarch64')
 url="https://www.perplexity.ai"
@@ -56,6 +56,8 @@ depends=(
 optdepends=(
   'apparmor: confine the app with the bundled user-namespace profile'
   'libappindicator-gtk3: tray icon support'
+  'docker: containerized local GPU runtime for on-device models'
+  'nvidia-container-toolkit: containerized local GPU runtime for on-device models'
 )
 
 makedepends=('libarchive')
@@ -91,6 +93,29 @@ package() {
   bsdtar -xOf "${deb}" data.tar.xz |
     bsdtar --no-same-owner -xf - -C "${pkgdir}"
 
+  # 26.9.1 started shipping a systemd unit under /lib, and owning /lib -- a
+  # symlink owned by the filesystem package -- makes pacman refuse the whole
+  # transaction. The unit is also a no-op here: its setup script apt-installs
+  # Docker and the NVIDIA Container Toolkit and exits on any distro but Ubuntu
+  # (install those yourself; see optdepends). Delete it, and its parents once
+  # emptied; then anything else left outside opt/ and usr/ -- whatever its
+  # type, an empty bin/ or lib64/ included, since those are filesystem-owned
+  # symlinks too -- stops the build rather than shipping the next conflict.
+  (
+    cd "${pkgdir}"
+    rm -f lib/systemd/system/perplexity-local-runtime-setup.service
+    rmdir -p lib/systemd/system 2>/dev/null || true
+  )
+
+  local unexpected
+  unexpected=$(cd "${pkgdir}" && find . -mindepth 1 \
+    -path ./opt -prune -o -path ./usr -prune -o -print)
+  if [[ -n "${unexpected}" ]]; then
+    echo "Unexpected entries outside opt/ and usr/ in the upstream deb:" >&2
+    echo "${unexpected}" >&2
+    return 1
+  fi
+
   # pacman never runs the deb's postinst, so the /usr/bin entry it would have
   # symlinked is a launcher here instead, and the menu entry goes through it so
   # the flags file applies there too. The scheme handler stays upstream's.