Add another trick to autorestart yunohost-api at the end of the upgrade when ran from the api itself...

debian/control

@@ -27,7 +27,7 @@ Depends: ${python3:Depends}, ${misc:Depends}
  , rspamd, opendkim-tools, postsrsd, procmail, mailutils
  , redis-server
  , acl
- , git, curl, wget, cron, unzip, jq, bc, at
+ , git, curl, wget, cron, unzip, jq, bc, at, procps
  , lsb-release, haveged, fake-hwclock, equivs, lsof, whois
 Recommends: yunohost-admin
  , ntp, inetutils-ping | iputils-ping

debian/postinst

@@ -38,6 +38,24 @@ do_configure() {
             systemctl restart yunohost-api
         else
             echo "(Delaying the restart of yunohost-api, this should automatically happen after the end of this upgrade)"
+            cat << EOF | at -M now >/dev/null 2>&1
+# Wait for apt / dpkg / yunohost to not be up anymore, hence the upgrade finished
+
+while pgrep -x apt || pgrep -x apt-get || pgrep dpkg || test -e /var/run/moulinette_yunohost.lock;
+do
+   sleep 3
+done
+
+# Restart yunohost-api, though only if it wasnt already restarted by something else in the last 60 secs
+
+API_START_TIMESTAMP="\$(date --date="\$(systemctl show yunohost-api | grep ExecMainStartTimestamp= | awk -F= '{print \$2}')" +%s)"
+
+if [ "\$(( \$(date +%s) - \$API_START_TIMESTAMP ))" -ge 60 ];
+then
+    echo "restart" >> /var/log/testalex
+    systemctl restart yunohost-api
+fi
+EOF
         fi
     fi
 }