nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqsaz8s86z5g9d6tu59g45l64u5k69rj3zc9lzpkmcsn646uhnpftqgn62zd for instance, this is how I make this beekeeper app image feel like a core part of my system

https://github.com/mkellyxp/nix/blob/main/common%2Fbeekeeper.nix

Then in my packages list, I call it like so.

(pkgs.callPackage ./beekeeper.nix { })

I bet there is a similar flow for tarballs