upgrades-installed-check requires pacman-contrib for checkupdates

archlinux/PKGBUILD

@@ -61,7 +61,7 @@ package_qubes-vm-core() {
              gnome-packagekit imagemagick fakeroot notification-daemon dconf
              zenity qubes-libvchan qubes-db-vm haveged python-gobject
              python-dbus xdg-utils notification-daemon gawk sed procps-ng librsvg
-             socat
+             socat pacman-contrib
              )
     optdepends=(gnome-keyring gnome-settings-daemon python-nautilus gpk-update-viewer qubes-vm-networking qubes-vm-keyring)
     install=PKGBUILD.install