Update nixpkgs test patch

tests/channel-patching/myNixpkgsPatch.patch

@@ -0,0 +1,40 @@
+diff --git a/lib/default.nix b/lib/default.nix
+index 5a85c542117..0ed00136d1d 100644
+--- a/lib/default.nix
++++ b/lib/default.nix
+@@ -146,5 +146,7 @@ let
+       nixType imap;
+     inherit (self.versions)
+       splitVersion;
++
++    patchedFunction = x: x;
+   });
+ in lib
+diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
+index c951db5822a..53226de942e 100644
+--- a/nixos/modules/module-list.nix
++++ b/nixos/modules/module-list.nix
+@@ -1191,4 +1191,10 @@
+   ./virtualisation/vmware-guest.nix
+   ./virtualisation/xen-dom0.nix
+   ./virtualisation/xe-guest-utilities.nix
++  ({ lib, config, ... }: {
++    options.patchedModule.test = lib.mkOption {
++      default = null;
++      example = "test";
++    };
++  })
+ ]
+diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
+index c904707b7cf..9f0cab1875d 100644
+--- a/pkgs/top-level/all-packages.nix
++++ b/pkgs/top-level/all-packages.nix
+@@ -12,6 +12,8 @@ with pkgs;
+ 
+ {
+ 
++  flake-utils-plus-test = callPackage ../applications/misc/hello { };
++
+   # A stdenv capable of building 32-bit binaries.  On x86_64-linux,
+   # it uses GCC compiled with multilib support; on i686-linux, it's
+   # just the plain stdenv.