Configuration examples

Worked, copy-adaptable configurations that compose the teaching domains (00–15) into one coherent picture. Each leaf is a walkthrough: file layout, annotated Nix, activate/check commands, failure modes, and deep links into concept/module pages—not a second option encyclopedia.

Not this domain: tiny parseable fixtures under meta/examples/. Cite those fixtures when a one-file snippet is enough; use these leaves when the reader needs a multi-file “how the pieces fit” story.

Pins such as nixos-26.05 and system = "x86_64-linux" are illustrative. Flake workflows need experimental nix-command and flakes. Stuck? FAQ → Getting help.

Contents

• Minimal flake NixOS host — Single-host flake + configuration.nix shape through first rebuild
• NixOS with Home Manager — System + user profile in one nixos-rebuild
• Project devShell and direnv — Flake devShells, mkShell, and auto-enter
• Custom package and overlay flake — callPackage, overlay, and flake packages / host use
• Homelab proxy, services, and secrets — Reverse proxy, firewall, and ciphertext secrets
• Multi-host config repo — hosts/ / modules/ fleet flake and deploy hooks
• nix-darwin with Home Manager — macOS system + user config via darwin-rebuild
• Disko + impermanence host — Declarative disks, tmpfs root, and /persist survivors
• nixos-anywhere bootstrap — Remote SSH wipe-and-install of a disko flake
• deploy-rs fleet — Day-2 multi-profile hub deploy on a multi-host flake
• Flake CI with GitHub Actions — Runner install, cache, nix flake check, host matrix