AUR isn't just the testing repo of Arch; it's explicitly just an open spot where anybody can put up "here's a PKGBUILD for folks". I don't see how it's like either the Nix or Debian examples.
Well, Nix has NUR which is a direct equivalent but it's not nearly as broadly used and I assume "here's a PKGBUILD for folks" is already too permissive for you if you're asking.
There's no maintainer vetting process in nixpkgs as far as I know, anyone can own a bunch of packages. There are quality standards and it's not "here's a bunch of nix code for folks" but it's the next possible thing in the line after that.
Well, Nix has NUR which is a direct equivalent but it's not nearly as broadly used and I assume "here's a PKGBUILD for folks" is already too permissive for you if you're asking.
There's no maintainer vetting process in nixpkgs as far as I know, anyone can own a bunch of packages. There are quality standards and it's not "here's a bunch of nix code for folks" but it's the next possible thing in the line after that.