I’m assuming you mean the ability to run an AUR-helper and automagically install from PKGBUILDs; in which case, the answer is no. IMHO, lack of AUR access isn’t as big of a deal as it used to be since Flatpak covers a good portion of what I have downloaded from the AUR in the past.
Does nix have access to the AUR?
No.
But Arch supports around 14,000 packages and any branch of Nix has around 100,000 stable and 100,000 unstable packages.
I’m assuming you mean the ability to run an AUR-helper and automagically install from PKGBUILDs; in which case, the answer is no. IMHO, lack of AUR access isn’t as big of a deal as it used to be since Flatpak covers a good portion of what I have downloaded from the AUR in the past.