Add the ability to cross-compile
diff --git a/modules/cross.nix b/modules/cross.nix
new file mode 100644
index 0000000..0aebfcf
--- /dev/null
+++ b/modules/cross.nix
@@ -0,0 +1 @@
+{ config.boot.binfmt.emulatedSystems = [ "aarch64-linux" ]; }