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+# Packaging guidelines
+
+## Entrypoint
+
+Every lovelace module has an entrypoint in the form of a `.js` file. By
+default the nixos module will try to load `${pname}.js` when a module is
+configured.
+
+The entrypoint used can be overridden in `passthru` like this:
+
+```nix
+passthru.entrypoint = "demo-card-bundle.js";
+```