diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..97e08fa
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,7 @@
+# default.nix
+{ pkgs ? import <nixpkgs> {} }:
+
+{
+  my-package = pkgs.callPackage ./my-package.nix {};
+  # Add more packages here
+}
diff --git a/my-package.nix b/my-package.nix
new file mode 100644
index 0000000..9eb508a
--- /dev/null
+++ b/my-package.nix
@@ -0,0 +1,8 @@
+# my-package.nix
+{ stdenv }:
+
+stdenv.mkDerivation {
+  name = "my-package";
+  src = ./.;
+  installPhase = "mkdir -p $out; echo 'Hello, Nix!' > $out/hello";
+}