No distro is really based on a window manager or desktop environment. Some provide defaults and premade configs. I kind of doubt any include hyprland as an option at installation, but, Wayland compatibility notwithstanding, there's nothing stopping you from throwing hyprland on whatever you would like. The best approach is to take a Wayland-ready setup, like Leaflet suggests, and just install hyprland.

NixOS

Alternatively (speculating here), you might be able to use Nix to install Hyprland onto an existing immutable distro like Silverblue.

Nix people please chime in!

You can install Fedora Atomic Sway then install Hyprland on that with rpm-ostree install hyprland.

Hyprland is a window manager, not a distro. You should be asking if there is a immutable distro with solid hyprland support (which there is). https://wiki.hyprland.org/Nix/Hyprland-on-NixOS/

Check out Wayblue, they make some custom universal blue images based off fedora silverblue which includes a hyprland image. I’m running a modified way blue image myself these days and loving it. Technically it’s a secureblue image based on a way blue image but yeah same difference

Was using NixOS but just could not deal with lack of FHS compatibility. Even the workarounds like nix-ld and nix-alien didn’t help with some key scripts I needed to run for secure network verification stuff. So I just migrated to this plus nix/home-manager for my application management

I've seen quite a few people rocking NixOS with Hyperland. And I thought the whole idea of Nix was to be more stable than most rolling releases?

I don't use either so I'm far from an expert on this.

You could try Guix (either standalone or Guix system). You can have a immutable profile, an immutable home environment with centralized configuration and much more!

The ability of having immutable environment and dotfile configurations is amazing.