Could you at least, at some point, when the comments have died down, share what this third alternative is? I'm really very curious - everyone replying to you is

Could you at least, at some point, when the comments have died down, share what this third alternative is? I'm really very curious - everyone replying to you is. - It can't be GoboLinux, because that post-dates Nix (by a small amount) - I've never heard anyone suggest environment modules have more technical merit than Nix, though they do predate Nix - Could it be portage, which has some of the same features as Nix? Nix explicitly cited portage as a predecessor, and IMO it surpasses it, so that would be surprising... I really don't know anything other than Nix or Guix that follows Nix's philosophy. I'm really interested to know what you're referring to!