Host profiles

A host profile is a template that defines the role of a machine. It is chosen with profile: in etc/config.yaml. Profiles are inherited: each starts from another and adds its specifics.

Inheritance

Profiles

Profile	For what	Inherits from	Provides
`minimal`	Base for every host		Hardware, firewall, i18n, zsh, sudo
`server`	Screenless server	`minimal`	No sleep, watchdog, limited boot
`desktop`	Workstation	`minimal`	GNOME, multimedia, office suite
`laptop`	Laptop	`desktop`	Battery, sensors, thermald
`umi`	Accessible workstation	`desktop`	Autologin, uinput, Tobii udev
`portable`	Bootable USB stick	`minimal`	Extended hardware drivers
`gateway`	Zone gateway	`server`	Router, firewall, DNS/DHCP, VPN
`hcs`	VPN coordination	`server`	Headscale + shared services
`vm`	Virtual machine	`server`	Guest tools (VirtualBox/QEMU/Xen)

Every host loads the full set of firmware, except a virtual machine : just install and just copy-hw detect it, whatever its profile (0.8 GiB less to download).

Workstations (desktop, laptop) print via CUPS and network discovery, without proprietary drivers. For all drivers (HP, Brother, Canon, Epson, Samsung), including on a laptop that already had them:

# usr/machines/<hôte>/configuration.nix
darkone.service.printing.loadAll = true;

Choosing a profile

hosts:
  - hostname: "poste"
    profile: "desktop"

A fleet machine must stay reachable : automatic sleep takes it off the network, and only physical intervention brings it back. No profile, portable included, therefore enables sleep by inactivity, neither on the desktop nor on the login screen. To restore it on a specific machine :

hosts:
  - hostname: "portable"
    profile: "laptop"
    features: ["auto-suspend"]

The screen always turns off after an inactivity delay, without suspending the machine.