working so far

default.nix

@@ -0,0 +1,11 @@
+# default.nix — local test entry-point
+# Usage:
+#   nix-build          (builds the package)
+#   nix-shell          (drops you into a shell with the package on PATH)
+#
+# To override nixpkgs:
+#   nix-build --arg nixpkgs '(import <nixpkgs> {})'
+
+{ nixpkgs ? import <nixpkgs> { config.allowUnfree = true; } }:
+
+nixpkgs.callPackage ./package.nix { }