[$] Highlights from systemd v258: part one

The next release of systemd has been percolating for an unusuallylong time. Systemd releases are usually about six months apart, butv257 came out inDecember2024, and v258 just now seems to be nearing the finishline; the third release candidate for v258 was published onAugust20 (releasenotes). Now is a good time to dig in and take a look at some ofthe new features, enhancements, and removals coming soon tosystemd. These include new workload-management features, a concept formultiple home-directory environments, and the final, once-and-for-allremoval of support for controlgroups version1.