Make the reported version follow the version actually being built

VERSION is now overridable, so the PKGBUILD passes $pkgver into make and the
two can no longer disagree. v1.0.1 shipped a Makefile that still said 1.0.0, so
'cachy-auto-update --version' reported the wrong release.

Makefile

@@ -5,7 +5,10 @@
 # targets degrade to a no-op when msgfmt/scdoc are missing, so the tree stays
 # usable for development without the build dependencies installed.
 
-VERSION      := 1.0.0
+# Overridable so a packager can pass the version it is actually building
+# (`make VERSION=$pkgver`). The literal below is the fallback for builds
+# straight from a checkout, and is what a release tag has to carry.
+VERSION      ?= 1.0.2
 
 PREFIX       ?= /usr
 DESTDIR      ?=

src/cachy-auto-update

@@ -170,7 +170,9 @@ cau_do_status() {
 
 cau_do_run() {
 	cau_need_root
-	exec "$CAU_LIBEXECDIR/cachy-auto-update-run" "$@"
+	# Not exec'd: this is also called from the menu, which has to survive the
+	# run and redraw afterwards.
+	"$CAU_LIBEXECDIR/cachy-auto-update-run" "$@"
 }
 
 cau_do_log() {

src/cachy-auto-update-run

@@ -40,6 +40,13 @@ if [[ $EUID -ne 0 ]]; then
 	exit 2
 fi
 
+# Force a neutral locale here rather than relying on the unit's Environment=,
+# so a run started by hand behaves exactly like one started by the timer.
+# pacman failures are classified by matching its output, and on a German system
+# that output is German. Text aimed at a person does not come through here - a
+# notification is rendered in the recipient's own locale by cau_msg_in.
+export LC_ALL=C LANGUAGE=
+
 # Re-exec under an inhibitor so a suspend or shutdown cannot land in the middle
 # of a pacman transaction and leave the database half-written. Done before
 # anything else so the whole pass is covered, including the lock.

src/lib/pkg_pacman.sh

@@ -76,9 +76,16 @@ cau_pacman_update() {
 		return 0
 	fi
 
+	if [[ -n $CAU_PACMAN_PENDING ]]; then
 		CAU_PACMAN_COUNT="$(grep -c . <<< "$CAU_PACMAN_PENDING")"
 		[[ $CAU_PACMAN_COUNT =~ ^[0-9]+$ ]] || CAU_PACMAN_COUNT=0
 		cau_info "Updating $CAU_PACMAN_COUNT repository package(s)"
+	else
+		# checkupdates is unavailable, so the list is unknown and pacman is
+		# asked to work it out itself.
+		CAU_PACMAN_COUNT=0
+		cau_info "Running a full system upgrade (pending list unavailable)"
+	fi
 
 	mapfile -t flags < <(cau_pacman_flags)
 	log="$(mktemp)" || return 1