temp

source/new-flake/bash-flake/main.adoc0

@@ -195,8 +195,11 @@ $# cat flake.nix
 ....
 
 Let's test the package.
+First, we should exit the development shell so we can verify that the flake dependencies are automatically loaded.
+Otherwise the script could use `cowsay` from the development shell.
 
 ....
+$ exit
 $ nix run
 ....
 

source/recipes/build/nixpkg/main.adoc0

@@ -1,7 +1,7 @@
 [#writeShellApplication]
 = Access a top level package from the Nixpkgs/NixOS repo
 
-In <<_introducing_a_dependency>>, we wrote a shell script that needed
+In <<#define-package>>, we wrote a shell script that needed
 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`.

source/recipes/build/nixpkg/tempwork/flake.lock

@@ -0,0 +1,60 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1760435515,
+        "narHash": "sha256-E9D5sWHmPCmWsrCB3Jogvr/7ODiVaKynDrOpG4ba2tI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "db25466bd95abdbe3012be2900a5562fcfb95d51",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

source/recipes/build/nixpkg/tempwork/flake.nix

@@ -0,0 +1,42 @@
+{
+  description = "a very simple and friendly flake";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells = rec {
+          default = pkgs.mkShell {
+            packages = [ pkgs.cowsay ];
+          };
+        };
+
+        packages = rec {
+          hello = pkgs.writeShellApplication {
+            name = "hello-cow";
+
+            runtimeInputs = [
+              pkgs.cowsay
+            ];
+
+            text = ''
+              cowsay "hello";
+            '';
+          };
+          default = hello;
+        };
+
+        apps = rec {
+          hello = flake-utils.lib.mkApp { drv = self.packages.${system}.hello; };
+          default = hello;
+        };
+      }
+    );
+}