How do I build/run locally with nix?

[wch]

I'm completely new to teslamate and want to try it out, but without using Docker, if that's possible. I use nix on my Mac. I saw that there's a flake.nix file in the repository, and I searched for issues and discussions around nix but only found a few mentions here and there.

I think this is working for me, with the main branch checked out:

In one terminal, I ran the following, and this appeared to start mqtt and postgres:

nix develop --no-pure-eval
devenv up

And then in another terminal, I ran some commands from https://docs.teslamate.org/docs/development:

nix develop --no-pure-eval
mix setup
MIX_ENV=test mix ecto.setup

iex -S mix phx.server

This got me to the point where I can connect to localhost:4000 and sign in with Tesla tokens. But at this point I'm not sure where to go next: How do I get enough grafana running so I can connect to localhost:3000? Am I trying to do something that teslamate just isn't designed to do?

[complexip]

[wch]

PSA: This response is spam from a totally unrelated party.