Move NixOS and home-manager stable to 22.05

home-manager/default.nix

@@ -1,7 +1,7 @@
 { lib, hmFlakes, inputs, pkgs', config, ... }:
 let
   inherit (builtins) head tail mapAttrs attrValues;
-  inherit (lib) flatten optional mkOption mkOptionType;
+  inherit (lib) flatten optional mkOption mkDefault mkOptionType;
   inherit (lib.my) homeStateVersion mkOpt' commonOpts inlineModule';
 
   cfg = config.home-manager;
@@ -60,6 +60,10 @@ let
         };
       };
     };
+
+    config = {
+      nixpkgs = mkDefault config.home-manager;
+    };
   };
 in
 {