nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqsaz8s86z5g9d6tu59g45l64u5k69rj3zc9lzpkmcsn646uhnpftqgn62zd Ive not needed to install from a tarball, but do have an app image I keep maintained as a nix package.
That's likely the answer. Make a nix package that builds it. Then it's part of your main build.
Are you sure it's not already in nix packages though? I'm always shocked how much is there