Creating nixosConfigurations.<hostname> but <hostname> is a darwin system

[m-spitfire]

Issue

I have a MacBook and a server. I wanted to use denix to manage my nix configurations. But running nix flake check .# as told in the documentation gave me following error

 … while checking flake output 'nixosConfigurations'
   at /nix/store/4nhqfb9a4pmc1xi7bdg7qry4mfas2v34-source/flake.nix:52:7:
     51|       # you can safely remove the corresponding lines below.
     52|       nixosConfigurations = mkConfigurations "nixos";
       |       ^
     53|       homeConfigurations = mkConfigurations "home";

 … while checking the NixOS configuration 'nixosConfigurations.desktop'
   at /nix/store/8qqm1vy9alwailivcy085pzaf11m4fy7-source/lib/configurations/default.nix:253:19:
    252|                 lib.optionalAttrs (!rice.inheritanceOnly or false) {
    253|                   "${lib.optionalString (moduleSystem == "home") "${host.homeManagerUser}@"}${hostName}${
       |                   ^
    254|                     lib.optionalString (riceName != null) "-${riceName}"
error: The option `home-manager.users.muradb.home.homeDirectory' has conflicting definition values:
- In `/nix/store/4nhqfb9a4pmc1xi7bdg7qry4mfas2v34-source/modules/config/home.nix': "/Users/muradb"
- In `/nix/store/mnc7gdgqpmqxi0s4nyqdk6p2n50yvgin-source/nixos/common.nix': "/home/muradb"
Use `lib.mkForce value` or `lib.mkDefault value` to change the priority on any of these definitions.

This is because even though mkConfigurations "nixos" call generates nixosConfigurations.desktop entry even though the system argument in delib.host call is aarch64-darwin. I don't know if this is the intended behavior, but if it is it's very strange to generate nixosConfigurations or darwinConfigurations for every host. I kept the mkConfigurations "nixos" call since I want to add my server configurations which is running nixos.

To reproduce

nix flake init -t github:yunfachi/denix#minimal

And made following edits:

1. edit hosts/desktop/*.nix
2. system to "aarch64-darwin"
3. delete nixos key entirely from hardware.nix
4. home.home.stateVersion to "25.05"
5. change values in modules/config/constants.nix to appropriate values
6. edit flake.nix changing homeManagerUser arg in denix.lib.configurations call to appropriate value

[yunfachi]

Hello, try splitting the hosts folder into hosts/nixos/... and hosts/darwin/..., and in the mkConfigurations function do this:

paths = [./modules ./rices] ++ {
  nixos = [./hosts/nixos];
  darwin = [./hosts/darwin];
  home = [./hosts];
}.${moduleSystem};

However, this can be solved more cleanly in #50.