systemd 233 comes four months after the release of the previous version, namely systemd 232, and it’s a major update that adds over 70 improvements and bug fixes, as well as some new features. First of, it looks like all the Python scripts that ship with systemd now require Python 3 to be installed on your GNU/Linux distribution. Prominent features include better compatibility with “legacy” cgroups-v1 setups for the “hybrid” control group mode, it’s possible to select the at compile or boot time, installation of DBus policy files into /usr instead of /etc by default, as well as the ability for systemd unit tests to run standalone.