Switch to compat 12. Remove vestiges of stretch support.

This switches us to using dh_installsystemd, and fixes some
service-restart-on-upgrade paths.

compat 12 was introduced in buster, so this won't work on
stretch, but we no longer support stretch so that's OK.

Also work around debhelper bug #989155 on buster/bullseye.

debian-bullseye/dump978-fa.preinst

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+# Work around Debian bug #989155
+if [ "$1" = upgrade ] && [ -d /run/systemd/system ] ; then
+	deb-systemd-invoke stop 'dump978-fa.service' >/dev/null || true
+fi

debian-bullseye/skyaware978.preinst

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+# Work around Debian bug #989155
+if [ "$1" = upgrade ] && [ -d /run/systemd/system ] ; then
+	deb-systemd-invoke stop 'skyaware978.service' >/dev/null || true
+fi

debian-buster/dump978-fa.preinst

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+# Work around Debian bug #989155
+if [ "$1" = upgrade ] && [ -d /run/systemd/system ] ; then
+	deb-systemd-invoke stop 'dump978-fa.service' >/dev/null || true
+fi

debian-buster/skyaware978.preinst

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e
+
+# Work around Debian bug #989155
+if [ "$1" = upgrade ] && [ -d /run/systemd/system ] ; then
+	deb-systemd-invoke stop 'skyaware978.service' >/dev/null || true
+fi

debian/compat

@@ -1 +1 @@
-10
+12

debian/control

@@ -1,14 +1,15 @@
 Source: dump978-fa
 Section: embedded
 Priority: extra
-Maintainer: Oliver Jowett <oliver@mutability.co.uk>
-Build-Depends: debhelper(>=10), libboost-system-dev, libboost-program-options-dev, libboost-regex-dev, libboost-filesystem-dev, libsoapysdr-dev
+Maintainer: Oliver Jowett <oliver[email protected]>
+Build-Depends: debhelper(>=12), libboost-system-dev, libboost-program-options-dev, libboost-regex-dev, libboost-filesystem-dev, libsoapysdr-dev
 Standards-Version: 3.9.3
 Homepage: http://www.flightaware.com/
 Vcs-Git: https://github.com/flightaware/dump978.git
 
 Package: dump978-fa
 Architecture: any
+Pre-Depends: ${misc:Pre-Depends}
 Depends: ${shlibs:Depends}, ${misc:Depends}, adduser
 Recommends: skyaware978, soapysdr-module-rtlsdr
 Description: ADS-B UAT Ground Station System
@@ -19,6 +20,7 @@ Package: skyaware978
 Replaces: skyview978 (<< 3.7.2~)
 Breaks: skyview978 (<< 3.7.2~)
 Architecture: any
+Pre-Depends: ${misc:Pre-Depends}
 Depends: ${shlibs:Depends}, ${misc:Depends}, adduser, lighttpd
 Description: Local web interface for dump978
  .

debian/rules

@@ -15,9 +15,8 @@ override_dh_auto_build:
 override_dh_installinit:
 	dh_installinit --no-stop-on-upgrade --no-restart-after-upgrade
 
-override_dh_systemd_start:
-	dh_systemd_start --no-stop-on-upgrade --no-restart-after-upgrade --name=dump978-fa.service
-	dh_systemd_start --no-stop-on-upgrade --no-restart-after-upgrade --name=skyaware978.service
+override_dh_installsystemd:
+	dh_installsystemd --no-restart-after-upgrade
 
 %:
-	dh $@ --with=systemd
+	dh $@

prepare-build.sh

@@ -35,13 +35,9 @@ FILES=$(find $TOP -mindepth 1 -maxdepth 1 -name .git -prune -o -name 'debian*' -
 mkdir -p $OUT
 cp -a $FILES $OUT
 cp -a $TOP/debian $OUT
+[ -d $TOP/debian-$DIST ] && cp -a $TOP/debian-$DIST/* $OUT/debian/
 
 case "$DIST" in
-    stretch)
-        echo "Updating changelog for stretch backport build" >&2
-        dch --changelog $OUT/debian/changelog --local ~bpo9+ --force-distribution --distribution stretch-backports "Automated backport build for stretch"
-        ;;
-
     buster)
         echo "Updating changelog for buster backport build" >&2
         dch --changelog $OUT/debian/changelog --local ~bpo10+ --force-distribution --distribution buster-backports "Automated backport build for buster"