@freakazoid @owi far more software (~40k packages) than Guix (~7k packages). Is more up-to-date (unstable 20% outdated, 80% newest) than guix (33% outdated, 67% newest). Source: https://repology.org/repositories/statistics/newest
what is stability?
stability in the sense of "programs wont segfault all the time" or "changes as little as possible"?
Many version updates for programs are done by a bot in nixpkgs (using repology) and humans just click the merge button after having a quick look.
So if e.g. Arch packages a newer version of abcde, the bot will notice this and try to update the package in nixpkgs during the next run and checks if it builds.
I can't remember any recent segfaults or similar for me.
@tokudan @owi These two are somewhat related: new features introduce new bugs. But from a practical standpoint, what it means with Debian Stable is that I can enable unattended-upgrades and just read the emails that it sends me at my leisure. The important thing really is that there's some kind of distinction between maintenance and feature releases of packages, and that the whole shebang is tested together at least within a minor (vs patch) release.
@freakazoid @owi Well, the channels only advance after an automated CI test. I don't know how the tests are done in Debian, so I cannot compare anything.
This website links to the CI, shows which channel is at which commit and when the channel last advanced: http://howoldis.herokuapp.com/
To get an idea about the automated tests: https://hydra.nixos.org/job/nixos/release-19.03/tested
Regarding ease of packaging:
Usually pretty easy, if the build uses one of the common build systems.
Compare with firefox:
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