LWN.net needs you! Without subscribers, LWN would simply not exist. Please consider signing up for a subscription and helping to keep LWN publishing. Keynote sessions at Open Source Summit events tend not to allow much time for detailed talks, and the 2025 Open Source Summit Europe did not diverge from that pattern. Even so, Daniel Stenberg, the maintainer of the curl project, managed to cram a lot into the 15 minutes given to him. Like the maintainers of many other projects, Stenberg is feeli...