Efficient NixOS Remote Deploys with Selective Closure Copying

Remote NixOS deploys get dramatically faster when the target host fetches public dependencies from its own substituters and you only push the private bits. The key is `--use-substitutes` and the trusted-user detail most guides skip.

NUR — The Distributed Package Registry Nix Deserves

NUR flips the AUR model inside out. Instead of one giant package repo, every maintainer keeps their own repository and NUR indexes the lot. That gives you composability, selective trust, and a much wider ecosystem than most Nix users realize.

Reliable Headless Raspberry Pi Provisioning on NixOS

For headless Raspberry Pi bring-up on NixOS, image-time secret injection is often more reliable than first-boot decryption on the device. Here's the provisioning flow, the brittle design we tried first, and why bootstrap state belongs under /var/lib rather than /etc.

Prometheus Ecowitt Exporter on NixOS

Getting Ecowitt weather station data into Prometheus and Grafana with a Rust exporter and a NixOS module — with forwarding to Home Assistant and other receivers.