Clean up support code for Home Manager as a submodule

This removes the `nixosSubmodule` option in favor of a new option
`submoduleSupport.enable`. This name better indicates that the
submodule mode applies to both NixOS and nix-darwin.

1 files changed, 2 insertions, 4 deletions

diff --git a/nixos/default.nix b/nixos/default.nix
index c101f5a981d..b8cea735e92 100644
--- a/nixos/default.nix
+++ b/nixos/default.nix
@@ -7,12 +7,10 @@ let
   cfg = config.home-manager;
 
   hmModule = types.submodule ({name, ...}: {
-    imports = import ../modules/modules.nix {
-      inherit lib pkgs;
-      nixosSubmodule = true;
-    };
+    imports = import ../modules/modules.nix { inherit lib pkgs; };
 
     config = {
+      submoduleSupport.enable = true;
       home.username = config.users.users.${name}.name;
       home.homeDirectory = config.users.users.${name}.home;
     };