This, for example: https://github.com/NixOS/nixpkgs/issues/18778 https://github.com/NixOS/nixpkgs/issues/18778 I support the idea of declarative configuration

This, for example: https://github.com/NixOS/nixpkgs/issues/18778 https://github.com/NixOS/nixpkgs/issues/18778 I support the idea of declarative configuration and dependencies, but I also realize that this is a very very hard thing to do, when each language have its own preferred package manager and they all expect a mutable environment. (I tried NixOS for 2 months and switched back to Ubuntu. The issues are too numerous so far, despite heroic work of NixOS dev team)