53 lines
1.6 KiB
Markdown
53 lines
1.6 KiB
Markdown
# Hosts
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Nix flakes contain an output called `nixosConfigurations` declaring an
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attribute set of valid NixOS systems. To create hosts, you can use the
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`nixos.hosts` argument and pass `modules` to each host. Host-specific modules
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typically go in the `hosts` folder of the template.
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Each host should follow a certain channel to define the `pkgs` of that host.
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You can use the `nixos.hostDefaults` to set defaults and global modules for all
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hosts.
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For each host, the configuration automatically sets the `networking.hostName`
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attribute to the name of the host. This is for convenience, since `nixos-rebuild`
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automatically searches for a configuration matching the current systems hostname
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if one is not specified explicitly.
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It is recommended that the host modules only contain configuration information
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specific to a particular piece of hardware. Anything reusable across machines
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is best saved for [profile modules](./profiles.md).
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This is a good place to import sets of profiles, called [suites](./suites.md),
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that you intend to use on your machine.
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Additionally, you can pass modules from [nixos-hardware][nixos-hardware] in the
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`modules` argument for relevant hosts.
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## Example
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hosts/librem.nix:
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```nix
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{ suites, hardware, ... }:
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{
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imports = suites.laptop ++ [ hardware.purism-librem-13v3 ];
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boot.loader.systemd-boot.enable = true;
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boot.loader.efi.canTouchEfiVariables = true;
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fileSystems."/" = { device = "/dev/disk/by-label/nixos"; };
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}
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```
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flake.nix
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```nix
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{
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nixos.hosts.librem = {
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system = "aarch64-linux";
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modules = ./hosts/librem.nix;
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};
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}
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```
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[nixos-hardware]: https://github.com/NixOS/nixos-hardware
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