autophagian parent
I'm guessing that Nix's 2% is nearly entirely driven by pull requests to the NixOS/nixpkgs repository, which has 4,053 open PRs and 190,167 closed ones at time of writing.
That makes sense and that was exactly what was going through my mind.
I guess, PR data shows you what needs to be updated frequently. Personally, I like getting code right and shipping it and never thinking about it again. But for "here's how to reproducibly install the newest possible version of foobarbaz" yeah, a lot of updates are going to be needed, simply because "the latest version of foobarbaz" is likely a moving target.