Hi Joachim Trinkwitz, I tested it on my Debian (stable) and it really has a problem, but this bug was solved in testing. I will propose an s-p-u (stable-proposed-updates) and as soon as it is accepted you will be informed by the BTS. For now, if you wish, you can install htpdate from backports (apt install -t buster-backports htpdate).
Thanks for reporting this Bug. Regards > Package: htpdate > Version: 1.2.0-3 > Severity: important > > Installation of htpdate fails on systems without directory /opt, because > of the directive 'InaccessibleDirectories=/boot /home /media /mnt /root > /opt /srv' in the systemd service file. The post-installation script > fails with the messages > htpdate.service: Failed to set up mount namespacing: No such file or directory > htpdate.service: Failed at step NAMESPACE spawning /usr/sbin/htpdate: No such > file or directory > > Obviously, a workaround is to create the directory /opt. -- ....................................................................... ⢀⣴⠾⠻⢶⣦⠀ Thiago Andrade Marques ⣾⠁⢰⠒⠀⣿⡁ GPG: 4096R/F8CDB08B ⢿⡄⠘⠷⠚⠋⠀ GPG Fingerprint: 1D38 EE3C 624F 955C E1FA 3C85 5A30 3591 F8CD B08B ⠈⠳⣄⠀⠀⠀⠀