Yarn got most of its popularity during a time when it was clearly ahead of npm in every way, but saw its share dropped when npm caught up. IMO Poetry came a bit

Yarn got most of its popularity during a time when it was clearly ahead of npm in every way, but saw its share dropped when npm caught up. IMO Poetry came a bit too late; it would have been a tremendous hit in like 2015, but as the timeline be it is the leap forward is simply not enough. (Incidentally I think the same is happening for Yarn v2 as well; very good ideas, but too minor for most users to care.)