nix-configuration/flake.nix

# Based on the Auxolotl template: https://github.com/auxolotl/templates
# For info on Flakes, see: https://nixos-and-flakes.thiscute.world/nixos-with-flakes/nixos-with-flakes-enabled
{
	description = "Aires' system Flake";
	
	inputs = {
		# Track base packages against unstable
		nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

		# Replace Nix with Lix: https://lix.systems/
		lix = {
			url = "git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90-beta.1";
			flake = false;
		};
		lix-module = {
			url = "git+https://git.lix.systems/lix-project/nixos-module";
			inputs.lix.follows = "lix";
			inputs.nixpkgs.follows = "nixpkgs";
		};

		# SecureBoot support
		lanzaboote.url = "github:nix-community/lanzaboote/v0.3.0";

		# Flatpak support
		nix-flatpak.url = "github:gmodena/nix-flatpak/v0.4.1";

		# Hardware configurations
		nixos-hardware.url = "github:NixOS/nixos-hardware";

		# Home-manager
		home-manager = {
			url = "github:nix-community/home-manager/master";
			inputs.nixpkgs.follows = "nixpkgs"; # Use system packages list where available
		};
	
		# TODO: Add Disko - https://github.com/nix-community/disko
	};

	outputs = inputs@{ self, nixpkgs, lanzaboote, nix-flatpak, home-manager, nixos-hardware, lix-module, ... }:
		let 
			forAllSystems = function:
				nixpkgs.lib.genAttrs [
				"x86_64-linux"
				"aarch64-linux"
			] (system: function nixpkgs.legacyPackages.${system});
			config.allowUnfree = true;
			
			# Define shared modules and imports
			defaultModules = {
				base = [
					{ _module.args = { inherit inputs; }; }
					./hosts/default.nix
					lix-module.nixosModules.default
					lanzaboote.nixosModules.lanzaboote
					nix-flatpak.nixosModules.nix-flatpak
					home-manager.nixosModules.home-manager {
						home-manager = {
							/* 
								When running, Home Manager will use the global package cache.
								It will also back up any files that it would otherwise overwrite.
								The originals will have the extension shown below.
							*/
							useGlobalPkgs = true;
							useUserPackages = true;
							backupFileExtension = "home-manager-backup";
						};
					}
				];
			};
		in {
			formatter = forAllSystems (pkgs: pkgs.nixfmt-rfc-style);
			nixosConfigurations = {

				Dimaga = nixpkgs.lib.nixosSystem {
					system = "x86_64-linux";
					modules = defaultModules.base ++ [
						nixos-hardware.nixosModules.common-cpu-intel
						./hosts/Dimaga
					];
				};

				Haven = nixpkgs.lib.nixosSystem {
					system = "x86_64-linux";
					modules = defaultModules.base ++ [
						nixos-hardware.nixosModules.common-cpu-amd-pstate
						./hosts/Haven
					];
				};

				Khanda = nixpkgs.lib.nixosSystem {
					system = "x86_64-linux";
					modules = defaultModules.base ++ [
						nixos-hardware.nixosModules.microsoft-surface-pro-intel
						./hosts/Khanda
					];
				};

				Pihole = nixpkgs.lib.nixosSystem {
					system = "aarch64-linux";
					modules = defaultModules.base ++ [
						nixos-hardware.nixosModules.raspberry-pi-4
						./hosts/Pihole
					];
				};

				Shura = nixpkgs.lib.nixosSystem {
					system = "x86_64-linux";
					modules = defaultModules.base ++ [
						nixos-hardware.nixosModules.lenovo-legion-16arha7
						./hosts/Shura
					];
				};
			};
		};
	}