nixos: extract personal configuration from modules

nix/configurations/default.nix

@@ -23,11 +23,40 @@
       {nixpkgs.hostPlatform = system;}
       nixpkgsConfig
 
+      # nixos modules
+      self.nixosModules.commonModules
       self.nixosModules.${"named-" + hostname}
       or (abort ''
         Expects a named NixOS module corresponding to the NixOS Configuration.
         What you are doing doesn't make sense.
       '')
+
+      # disko
+      inputs.disko.nixosModules.default
+      self.diskoConfigurations.${hostname} or {}
+
+      # user configuration
+      self.nixosModules.leana
+      inputs.home-manager.nixosModules.home-manager
+      ({
+        config,
+        lib,
+        ...
+      }: {
+        home-manager = {
+          useGlobalPkgs = true;
+          useUserPackages = true;
+          extraSpecialArgs.hostname = hostname;
+          sharedModules = [{home.stateVersion = lib.mkDefault config.system.stateVersion;}];
+          users.leana.imports = [
+            self.homeModules.${"named-" + hostname}
+            or (
+              builtins.trace "No named home-manager configuration supplied for named system config `${hostname}', defaulting to common modules."
+              self.homeModules.commonModules
+            )
+          ];
+        };
+      })
     ];
   in
     many (