diff --git a/source/recipes/build/nixpkg/main.adoc0 b/source/recipes/build/nixpkg/main.adoc0
index 19dc708..f529e08 100644
--- a/source/recipes/build/nixpkg/main.adoc0
+++ b/source/recipes/build/nixpkg/main.adoc0
@@ -6,9 +6,15 @@ access to the Linux `cowsay` command.
 To accomplish this, we added a step to the `installPhase` that
 modified that script by including the full path to `cowsay`.
 
+== Using `writeShellApplication`
+
 Let's see a different approach.
 This time we won't start with an existing script;
 we'll create it during installation.
+The `writeShellApplication` will modify the script,
+filling in the shebang and setting up the path with the dependencies specified in `runtimeInputs`.
+For more information, see the
+https://noogle.dev/f/pkgs/writeShellApplication[documentation].
 
 ////
 $ mkdir tempwork
@@ -32,6 +38,13 @@ Here's the flake in action.
 $ nix run
 ....
 
+== Other approaches
+
+Nix provides a variety of functions that help with common tasks such as creating scripts.
+See the section on https://nixos.org/manual/nixpkgs/stable/#chap-trivial-builders[trivial build helpers]
+in the Nixpkgs reference manual, particularly
+https://nixos.org/manual/nixpkgs/stable/#trivial-builder-writeShellScript[writeShellScript]
+and https://nixos.org/manual/nixpkgs/stable/#trivial-builder-writeShellScriptBin[writeShellScriptBin].
 ////
 Good adoc0 scripts clean up after themselves.
 $ cd .. ; rm -rf tempwork # clean up
diff --git a/source/recipes/build/nixpkg/tempwork/flake.lock b/source/recipes/build/nixpkg/tempwork/flake.lock
index f3a57cc..aecd697 100644
--- a/source/recipes/build/nixpkg/tempwork/flake.lock
+++ b/source/recipes/build/nixpkg/tempwork/flake.lock
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1759940130,
-        "narHash": "sha256-Mh7OwdNa3wtyEvPfKui/+Wu1wsjFaagcgk5b5cWAHQw=",
+        "lastModified": 1759944796,
+        "narHash": "sha256-MAfTOXtCiAbSbC3j8Mj1loQ312qtdhSXYpbauc01VTU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "69cb92cdb8da8825ade450fe099028e3a3a278fd",
+        "rev": "11130c70a7d40569cbda12fa5d9dc09385b81538",
         "type": "github"
       },
       "original": {