I'm Delfim Leite, living in Porto, Portugal. I work under the name EnovaMaker. Most of what I publish is infrastructure people are supposed to be able to run themselves — declaratively, reproducibly, and without trusting me to keep a service up.

Open source

NixOS modules for digital sovereignty: censorship-resistant networking, self-hosting, supply-chain provenance, and payments. All MIT-licensed. Two ship working code today; the rest are published designs with their architecture and roadmap in the open.

• nixos-webtunnel-bridge working
  A Tor WebTunnel bridge relay from one declaration — Tor, the transport, nginx with TLS and a cover site. Two-node VM test in CI.
• nixos-tor-anti-dos working
  Per-source rate limiting for a Tor relay's ORPort. Picks up what the unlicensed, unmaintained tor-ddos left behind.
• nixos-sovereign-host design
  Community self-hosting: Matrix with bridges, Syncthing, monitoring, backup and SSO.
• nixos-sovereign-host-censorship design
  Onion services, an obfs4 bridge, metadata hardening and a one-flag lockdown mode.
• nixos-provenance-guard design
  Checks that a new flake-input revision is a legitimate continuation of its history, not a repository takeover.
• nixos-local-first design
  Self-hosting the NextGraph end-to-end-encrypted local-first stack.
• nixos-taler design
  Production operations for GNU Taler: auditor role, typed AML/KYC options, TLS, encrypted backups and systemd sandboxing.
• nixos-iot-edge design
  Declarative IoT ingestion: an MQTT broker, a time-series store and a query API.

Engineering

Alongside the open source work, the areas I take on commercially:

• Industrial IoT & data acquisition
• Predictive maintenance
• Building energy monitoring
• V2G & bidirectional charging
• Embedded firmware (ESP32, NixOS)
• Machine learning, applied

Contact

enovamaker@gmail.com

Write about anything below, or just write. These only fill in a subject line.

• A question about a module How to deploy one, whether it fits what you are running.
• Engineering work Industrial monitoring, IoT, energy, embedded. Say what the problem is.
• Collaboration or funding Partnerships, grant consortia, sponsoring the maintenance work.

Something broken in a module is better as an issue on the repository than as an email — the answer helps whoever hits it next. github.com/EnovaMaker