move modules into nixosModules, add autoimport

flake-parts/modules.nix

@@ -1,7 +1,10 @@
 # export some of our flake moduels for re-use in other projects
-{ ...
+{ lib
+, self
+, ...
 }: {
   flake.modules.flake-parts = {
     writers = ./writers;
   };
+  flake.nixosModules = lib.mapAttrs (_: nix: { imports = [ nix ]; }) (self.lib.findNixFiles ../nixosModules);
 }

flake-parts/nixosModules.nix

@@ -0,0 +1,6 @@
+{ lib
+, self
+, ...
+}: {
+  flake.nixosModules = lib.mapAttrs (_: nix: { imports = [ nix ]; }) (self.lib.findNixFiles ../nixosModules);
+}

flake-parts/packages.nix

@@ -5,6 +5,7 @@
         system = "x86_64-linux";
         modules = [
           self.nixosModules.installer
+          self.nixosModules.hidden-ssh-announce
           self.inputs.nixos-generators.nixosModules.all-formats
           self.inputs.disko.nixosModules.disko
         ];