kaathe [1] filed an adoption request for nixfmt [2]: The package is currently orphaned, and I don't see any anyone else willing to adopt it. It's used fairly frequently in Nix development (it's the de-facto formatter), so it deserves to be maintained.
[1] https://aur.archlinux.org/account/kaathe/ [2] https://aur.archlinux.org/pkgbase/nixfmt/
