What are your thoughts on there concerns?
Regarding experimental features like flakes: the reality is they're incredibly stable. I've written about this before: https://determinate.systems/posts/experimental-does-not-mean.... They haven't realistically changed in years, because they work so well. The experimental label is practically FUD at this point.
If the Nix team were to change flakes in a breaking way, it would be stunning neglect for the vast, vast percentage of the ecosystem that has already adopted them. Our data shows that of all the (OSS) repositories created every day, almost 90% of them start with a flake.nix. Of all of those projects, less than 20% use the legacy file formats, and most of those are using the flake-compat library.
On documentation and interfaces, I agree, and we and the greater community are working hard to on that problem. I'll take time, but it is decidedly better than it was a few short years ago.
And on community fragmentation, I just don't see it becoming a problem. The core Nix ecosystem is so large and diverse, I don't see meaningful fragmentation coming out of this.
90% of OSS repositories that use Nix I suppose?
Even as someone who does think Flakes are better than the prior solutions, I'm increasingly of the opinion that Flakes would be better moved to a layer outside the core Nix project - advancing them within core Nix at this stage seems pretty impossible with many within the project opposed to their existence. I think if Flakes were an alternative project at the same level as something like Niv, a lot of the holy warring would get out of the way.
1. Those who wish to improve them could do so without the discussion being deadlocked by "hey, we haven't yet agreed these should be stable"
2. Those who don't want to paint them as the path forward for fear of precluding a better option, now don't have to.
I posted some information and metrics about that on Discourse:
https://discourse.nixos.org/t/announcing-determinate-nix/547...