3 files changed, 47 insertions, 1 deletions
diff --git a/packaging/deb/meshbay-common/DEBIAN/preinst b/packaging/deb/meshbay-common/DEBIAN/preinst
new file mode 100755
index 0000000..16af2f8
--- /dev/null
+++ b/packaging/deb/meshbay-common/DEBIAN/preinst
@@ -0,0 +1,14 @@
+#!/bin/sh
+set -e
+
+# The postinst compiles bytecode next to every module, into __pycache__
+# directories the package does not own. Left in place, they keep dpkg from
+# removing a directory the new version no longer ships, and it warns.
+case "$1" in
+    upgrade)
+        find /opt/meshbay-common/venv -depth -type d -name __pycache__ \
+            -exec rm -rf {} + 2>/dev/null || true
+        ;;
+esac
+
+#DEBHELPER#
diff --git a/packaging/deb/meshbay-common/DEBIAN/prerm b/packaging/deb/meshbay-common/DEBIAN/prerm
new file mode 100755
index 0000000..e7b665b
--- /dev/null
+++ b/packaging/deb/meshbay-common/DEBIAN/prerm
@@ -0,0 +1,13 @@
+#!/bin/sh
+set -e
+
+# Bytecode the postinst compiled is not the package's: removed here, so that
+# dpkg can remove the directories it was written into.
+case "$1" in
+    remove|upgrade|deconfigure)
+        find /opt/meshbay-common/venv -depth -type d -name __pycache__ \
+            -exec rm -rf {} + 2>/dev/null || true
+        ;;
+esac
+
+#DEBHELPER#
diff --git a/packaging/deb/meshbay-node/DEBIAN/postinst b/packaging/deb/meshbay-node/DEBIAN/postinst
index ba16633..f78cf6c 100644
--- a/packaging/deb/meshbay-node/DEBIAN/postinst
+++ b/packaging/deb/meshbay-node/DEBIAN/postinst
@@ -1,11 +1,30 @@
 #!/bin/sh
 set -e
 
+# The node runs as a user service, in every signed-in user's own systemd
+# manager: the system-wide reload does not reach those, and each would keep
+# the old unit and the old code until restarted by hand. Every running user
+# manager reloads, and restarts the node where it was running.
+reload_user_managers() {
+    for bus in /run/user/*/systemd/private; do
+        [ -S "$bus" ] || continue
+        uid=$(basename "$(dirname "$(dirname "$bus")")")
+        user=$(id -nu "$uid" 2>/dev/null) || continue
+        systemctl --user -M "$user@" daemon-reload 2>/dev/null || true
+        [ -n "$1" ] && systemctl --user -M "$user@" try-restart meshbay-node.service 2>/dev/null || true
+    done
+}
+
 case "$1" in
     configure)
-        # Reload systemd if available
         if [ -d /run/systemd/system ]; then
             systemctl daemon-reload || true
+            # $2 is the version replaced: on an upgrade, a running node
+            # restarts onto the new code.
+            if [ -n "$2" ]; then
+                systemctl try-restart 'meshbay-node@*.service' 2>/dev/null || true
+            fi
+            reload_user_managers "$2"
         fi
         ;;
 esac