How to Use SwayWM with SDDM via Home-Manager

Help
1

I’ve realised that when using KDE I don’t actually use most of the “desktop” features of it and I wanted to try out a window manager. I chose Sway after discussion with a few friends who use Tiling WMs and because I want to use wayland.

Now with swapping my biggest concern was that I do not want to log in to my system via the TTY and manual (or with a script on login) exec sway. I really much prefer the experience of using a display manager like SDDM.

The issue I’ve encountered is I can’t find any concrete documented way on any kind of forum or documentation that shows how one could do this with home manager. I have tried with my configs, I’ve read the docs for the specific options im using and nothing I do seems to work. I can either use the programs.sway option in configuration.nix and that shows up in SDDM, but ignores home manager; Or I can set the configuration.nix sway to use a null package as the docs say doing that will allow you to use the home-manager versions.

Here’s my configurations:

configuration.nix

services.xserver = {
    enable = true;
    xkb = {
      layout = "au";
      variant = "";
    };
  };

  programs.sway.enable = true;
  programs.sway.package = null;

  services.displayManager = {
    enable = true;
    SDDM = {
      enable = true;
      wayland = true;
    };
  };
  security.polkit.enable = true;

home.nix

{ pkgs, ... }:
{
  home.username = "misty";
  home.homeDirectory = "/home/misty";

  imports = [
    ./sway.nix
  ];

  home.packages = with pkgs; [
    fastfetch
  ];

  home.stateVersion = "24.11";

  home.shellAliases = {
    rebuild = "sudo nixos-rebuild switch --flake .#mistylappytappy";
    upgrade = "/home/misty/Documents/nixos-configs && nix flake upgrade && sudo nixos-rebuild switch --flake .#mistylappytappy";
  };

  programs.home-manager.enable = true;
}

sway.nix

{ pkgs, ... }: {
  wayland.windowManager.sway = {
    enable = true;
    systemd = {
      enable = true;
    };
    package = pkgs.sway;
    config = rec {
      modifier = "Mod4";
      terminal = "kitty";
      startup = [
        {command = "fastfetch";}
      ];
    };
  };
}

I’m so stuck in figuring this one out so any help would be much appreciated

2

I managed to figure it out. The documentation in the wiki is just plain wrong. Using programs.sway.enable does let you use home-manager the home manager version and setting the package to null just does nothing but not let you use sway