Alex Davies
edcc5edac4
# Aider chat conversation:
USER: I'm a bit concerned about setting the hostname in `nixos/configuration.nix` , as I want to use the same basic configuration for all of my devices
ASSISTANT: I understand your concern. You can use a variable for the hostname in `nixos/configuration.nix` and pass it in from the `flake.nix` file when defining the `nixosConfigurations`. This way, you can have the same default `nixos/configuration.nix` for every system and just change the hostname for each system in the `flake.nix` file.
Here are the *SEARCH/REPLACE* blocks:
flake.nix
```nix
<<<<<<< SEARCH
athame = nixpkgs.lib.nixosSystem {
specialArgs = {inherit inputs outputs;};
=======
athame = nixpkgs.lib.nixosSystem {
specialArgs = {inherit inputs outputs; hostname = "athame";};
>>>>>>> REPLACE
```
flake.nix
```nix
<<<<<<< SEARCH
metatron = nixpkgs.lib.nixosSystem {
specialArgs = {inherit inputs outputs;};
=======
metatron = nixpkgs.lib.nixosSystem {
specialArgs = {inherit inputs outputs; hostname = "metatron";};
>>>>>>> REPLACE
```
nixos/configuration.nix
```nix
<<<<<<< SEARCH
networking.hostName = "your-hostname";
=======
networking.hostName = inputs.hostname;
>>>>>>> REPLACE
```
This will replace the hardcoded hostname in `nixos/configuration.nix` with a reference to the hostname defined in the `flake.nix` file.
114 lines
3.6 KiB
Nix
114 lines
3.6 KiB
Nix
# This is your system's configuration file.
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# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
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{
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inputs,
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outputs,
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lib,
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config,
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pkgs,
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...
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}: {
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# You can import other NixOS modules here
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imports = [
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# If you want to use modules your own flake exports (from modules/nixos):
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# outputs.nixosModules.example
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# Or modules from other flakes (such as nixos-hardware):
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# inputs.hardware.nixosModules.common-cpu-amd
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# inputs.hardware.nixosModules.common-ssd
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# You can also split up your configuration and import pieces of it here:
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# ./users.nix
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# Import your generated (nixos-generate-config) hardware configuration
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./hardware-configuration.nix
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];
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nixpkgs = {
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# You can add overlays here
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overlays = [
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# Add overlays your own flake exports (from overlays and pkgs dir):
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outputs.overlays.additions
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outputs.overlays.modifications
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outputs.overlays.unstable-packages
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# You can also add overlays exported from other flakes:
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# neovim-nightly-overlay.overlays.default
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# Or define it inline, for example:
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# (final: prev: {
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# hi = final.hello.overrideAttrs (oldAttrs: {
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# patches = [ ./change-hello-to-hi.patch ];
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# });
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# })
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];
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# Configure your nixpkgs instance
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config = {
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# Disable if you don't want unfree packages
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allowUnfree = true;
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};
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};
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# This will add each flake input as a registry
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# To make nix3 commands consistent with your flake
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nix.registry = (lib.mapAttrs (_: flake: {inherit flake;})) ((lib.filterAttrs (_: lib.isType "flake")) inputs);
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# This will additionally add your inputs to the system's legacy channels
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# Making legacy nix commands consistent as well, awesome!
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nix.nixPath = ["/etc/nix/path"];
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environment.etc =
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lib.mapAttrs'
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(name: value: {
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name = "nix/path/${name}";
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value.source = value.flake;
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})
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config.nix.registry;
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nix.settings = {
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# Enable flakes and new 'nix' command
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experimental-features = "nix-command flakes";
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# Deduplicate and optimize nix store
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auto-optimise-store = true;
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};
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# FIXME: Add the rest of your current configuration
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# TODO: Set your hostname
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networking.hostName = inputs.hostname;
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# TODO: This is just an example, be sure to use whatever bootloader you prefer
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boot.loader.systemd-boot.enable = true;
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# TODO: Configure your system-wide user settings (groups, etc), add more users as needed.
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users.users = {
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# FIXME: Replace with your username
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your-username = {
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# TODO: You can set an initial password for your user.
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# If you do, you can skip setting a root password by passing '--no-root-passwd' to nixos-install.
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# Be sure to change it (using passwd) after rebooting!
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initialPassword = "correcthorsebatterystaple";
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isNormalUser = true;
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openssh.authorizedKeys.keys = [
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# TODO: Add your SSH public key(s) here, if you plan on using SSH to connect
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];
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# TODO: Be sure to add any other groups you need (such as networkmanager, audio, docker, etc)
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extraGroups = ["wheel"];
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};
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};
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# This setups a SSH server. Very important if you're setting up a headless system.
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# Feel free to remove if you don't need it.
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services.openssh = {
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enable = true;
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settings = {
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# Forbid root login through SSH.
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PermitRootLogin = "no";
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# Use keys only. Remove if you want to SSH using password (not recommended)
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PasswordAuthentication = false;
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};
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};
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# https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
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system.stateVersion = "23.05";
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}
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