Support Nix-on-Droid configurations

[worldofgeese]

Hi! Would you consider adding first-class support for Nix-on-Droid?

I couldn't find any existing Nix-on-Droid, nix-on-droid, nixOnDroid, or Android references in the repo/docs/issues. Den looks domain-agnostic and already supports custom classes, so it seems like Nix-on-Droid might be possible via a user-defined nixOnDroid class, but it would be great to have an official battery, docs, or template.

A useful outcome could be one of:

• confirmation that Nix-on-Droid is already possible and the recommended integration pattern;
• a small example/template that produces nixOnDroidConfigurations;
• or first-class support similar to the existing NixOS/nix-darwin/Home Manager/Hjem/WSL/MicroVM integrations.

Thanks for considering it!

[sini]

Yes, this would 100% be feasible to implement with the current mechanisms and a template demonstrating it would be a fantastic addition. I would gladly review and merge a PR if you were to provide one -- you can look at the fleet-demo for changing host resolution paths/alternative targets, or microvm templates which is slightly older/adapted for forwarding a host configuration into a subkey for some inspiration. Or the terranix-demo which uses host info to build a terranix configuration.

These demos could likely use some improvement, and fleet and terranix currently have some documentation gaps in the form of a missing readme -- but the code should be documented.

If you don't have time to do it -- I will eventually pick this up but it won't be for a few weeks.

If you decide to contribute it and have questions, I'm happy to help in real time and review your commits/progress via our matrix channel.

[sini]

I see we've got some upvotes on the discussion topic -- the invitation of support is open to anyone who wants to take it up. :)