Barbossa is my home server that runs:

• HTPC (Plex, Sonarr, Radarr, NZBget)
• TIG (Telegraf, InfluxDB, Grafana)
• ELK (ElasticSearch, Logstash, Kibana)
• Nginx
• Time Machine

It runs on NixOS and all configuration is written on Nix. Deployment is currently with Ansible because NixOps doesn't support macOS to Linux deploys.

A lot of this can probably work for you. The files in nix/components are pretty portable and have a lot of configuration options. nix/configuration.nix and nix/hardware-configuration.nix are more specific to my machine, so you may want to double-check those first.