NixOS Flake Configuration

Modular NixOS configuration using flake-parts with the dendritic pattern.

Structure

.
├── aspects/           # Reusable NixOS/home-manager modules (dendritic)
│   ├── base/          # Base system configuration
│   ├── hosts/         # Host-specific configurations
│   │   ├── _alexandria/
│   │   ├── _io/
│   │   ├── _rotterdam/
│   │   └── _trantor/
│   ├── systems/       # System type modules (desktop, server, cli, gaming)
│   └── users/         # User account configurations
├── data/              # Shared host/service definitions
├── packages/          # Custom packages and overlays
├── shells/            # Shell configurations
└── terranix/          # Terraform configurations for cloud resources

Hosts

Host	Architecture	Type	Description
trantor	aarch64-linux	server	ARM server running Forgejo
alexandria	x86_64-linux	server	x86 server (Kanidm, Vaultwarden, Nextcloud, Jellyfin)
rotterdam	x86_64-linux	desktop	Main workstation setup for gaming
io	x86_64-linux	desktop	Workstation

Services

• git.baduhai.dev (Forgejo) - Publicly accessible on trantor

Other services (LAN/Tailscale only): Vaultwarden, Nextcloud, Jellyfin

Features

• Ephemeral root: Automatic btrfs subvolume rollover with impermanence
• Secrets: Managed via agenix with age encryption
• Disk management: disko for declarative disk partitioning
• Modular architecture: Each aspect is a separate module imported via import-tree
• Dendritic pattern: Aspects are imported as a unified flake module

Building

# Build specific host
nix build .#nixosConfigurations.trantor.config.system.build.toplevel

# Rebuild host (if using nixos-cli on the host)
sudo nixos apply

Terranix

Terraform configurations for cloud infrastructure managed via terranix:

• baduhai.dev DNS on CloudFlare
• VPS provisioning on OCI
• Tailscale subnet routers

Key Dependencies

• nixpkgs (nixos-unstable for workstations, nixos for servers)
• home-manager
• agenix
• disko
• impermanence
• nix-flatpak
• nixos-cli