Rename directory flake to flake-parts

flake/hosts.nix

@@ -1,59 +0,0 @@
-{
-  inputs,
-  self,
-  lib,
-  ...
-}:
-let
-  mkHost =
-    hostName:
-    inputs.nixpkgs.lib.nixosSystem {
-      specialArgs = { inherit inputs self; };
-      modules =
-        let
-          hostFiles =
-            "${self}/hosts/${hostName}"
-            |> lib.filesystem.listFilesRecursive
-            |> lib.filter (lib.hasSuffix ".nix");
-
-          userFiles =
-            "${self}/users"
-            |> builtins.readDir
-            |> lib.filterAttrs (_: type: type == "directory")
-            |> lib.attrNames
-            |> map (user: "${self}/users/${user}/@${hostName}")
-            |> lib.filter (path: lib.pathExists path);
-        in
-        [
-          { networking = { inherit hostName; }; }
-          "${self}/hosts/common.nix"
-        ]
-        ++ hostFiles
-        ++ userFiles;
-    };
-
-  mkDeployNode = hostname: {
-    inherit hostname;
-    sshUser = "root";
-    profiles.system.path =
-      inputs.deploy-rs.lib.x86_64-linux.activate.nixos
-        self.nixosConfigurations.${hostname};
-  };
-in
-{
-  flake = {
-    nixosConfigurations =
-      "${self}/hosts"
-      |> builtins.readDir
-      |> lib.filterAttrs (_: type: type == "directory")
-      |> lib.mapAttrs (name: _: mkHost name);
-
-    deploy.nodes =
-      "${self}/hosts"
-      |> builtins.readDir
-      |> lib.filterAttrs (_: type: type == "directory")
-      |> lib.mapAttrs (name: _: mkDeployNode name);
-
-    checks = lib.mapAttrs (_: deployLib: deployLib.deployChecks self.deploy) inputs.deploy-rs.lib;
-  };
-}