From cc6f1dda06fff5d6f5e6bc478aef03d429fb20d3 Mon Sep 17 00:00:00 2001
From: brian <brian@briannelson.dev>
Date: Tue, 24 Feb 2026 16:10:01 -0500
Subject: [PATCH] callPackages and readme

---
 README.md               | 5 +++++
 callPackage/default.nix | 7 +++++++
 callPackage/hello.nix   | 7 +++++++
 3 files changed, 19 insertions(+)
 create mode 100644 README.md
 create mode 100644 callPackage/default.nix
 create mode 100644 callPackage/hello.nix

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..020ea7b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# NixOS Tutorial
+This is a working repo for learning how to develop in NixOS and configure systems. 
+
+## Material
+I'm currently following the tutorials at [Nix.dev](https://nix.dev/tutorials/)
\ No newline at end of file
diff --git a/callPackage/default.nix b/callPackage/default.nix
new file mode 100644
index 0000000..51db9a5
--- /dev/null
+++ b/callPackage/default.nix
@@ -0,0 +1,7 @@
+let 
+  pkgs = import <nixpkgs> { };
+in 
+rec{
+  hello = pkgs.callPackage ./hello.nix { audience = "people"; };
+  hello-folks = hello.override { audience = "folks"; };
+}
\ No newline at end of file
diff --git a/callPackage/hello.nix b/callPackage/hello.nix
new file mode 100644
index 0000000..2dc0740
--- /dev/null
+++ b/callPackage/hello.nix
@@ -0,0 +1,7 @@
+{ 
+  writeShellScriptBin,
+  audience ? "world",
+}:
+writeShellScriptBin "hello" ''
+  echo "Hello, ${audience}!"
+''
\ No newline at end of file