# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{
	description = "Greg's machines!";

	inputs = {
		stable.url = "github:nixos/nixpkgs/nixos-22.05";
		nixunstable.url = "github:nixos/nixpkgs/nixos-unstable";
		agenix.url = "github:ryantm/agenix";
		flake-utils.url = "github:numtide/flake-utils";
		home-manager = {
			url = "github:nix-community/home-manager/release-22.05";
			inputs.nixpkgs.follows = "stable";
		};
		darwin = {
			url = "github:lnl7/nix-darwin/master";
			inputs.nixpkgs.follows = "nixunstable";
		};
		wsl = {
			url = "github:nix-community/NixOS-WSL";
			inputs.nixpkgs.follows = "nixunstable";
		};
		nurpkgs.url = "github:nix-community/NUR";
		ffmac.url = "github:bandithedoge/nixpkgs-firefox-darwin";
	};

	outputs = {stable, nixunstable, agenix, home-manager, nurpkgs, self, wsl, flake-utils, ...}@inputs:
	let
		local_overlay = import ./overlays;
		overlays = [
			agenix.overlay
			local_overlay
			nurpkgs.overlay
			inputs.ffmac.overlay
		];

		unstable = args: (machine (args // { channel = nixunstable; }));
		machine = {
			system ? "x86_64-linux",
			name,
			channel ? stable,
			extraMods ? []
		}:
		let
			nixpkgs = channel;
		in nixpkgs.lib.nixosSystem {
			inherit system;
			modules = [
				{ nixpkgs.overlays = overlays; }
				agenix.nixosModule
				./modules-all
				./modules-linux
				./hosts/${name}
				home-manager.nixosModules.home-manager {
					home-manager.useGlobalPkgs = true;
					home-manager.useUserPackages = true;
					home-manager.extraSpecialArgs = {
						inherit nixpkgs;
					};
				}
			] ++ extraMods;
			specialArgs = {
				home-manager = inputs.home-manager;
				inherit nixpkgs;
			};
		};

	in {
		nixosConfigurations = {
			"2maccabees" = unstable { system = "aarch64-linux"; name = "2maccabees"; };
			jude = unstable { name = "jude"; };
			"icdm-root" = unstable { name = "icdm-root"; };
			"linode" = machine { name = "linode"; };
			"lappy" = machine { name = "lappy"; };
			"iso" = machine { name = "iso"; };
			# nix build '.#nixosConfigurations.wsl.config.system.build.installer'
			"nixos" = unstable { name = "wsl"; system = "aarch64-linux"; extraMods = [ wsl.nixosModules.wsl ]; };
			# nix build '.#nixosConfigurations.wsl-aarch.config.system.build.installer'
			"nixos-arm" = unstable { name = "wsl"; system = "aarch64-linux"; extraMods = [ wsl.nixosModules.wsl ]; };
		};

		darwinConfigurations =
		let
			nixpkgs = stable {
				overlays = overlays;
			};
		in {
			"C02G48H8MD6R" = inputs.darwin.lib.darwinSystem {
				system = "x86_64-darwin";
				specialArgs = {
					nixpkgs = stable;
				};
				modules = [
					{ nixpkgs.overlays = overlays; }
					inputs.agenix.nixosModule
					./modules-all
					./modules-darwin
					./hosts/work
				];
			};
		};

		defaultPackage = flake-utils.lib.eachDefaultSystemMap (system: inputs.self.homeConfigurations.gui."${system}".activationPackage);

		homeConfigurations = (
			import ./home {
				inherit nixunstable agenix home-manager overlays flake-utils;
				nixpkgs = nixunstable;
			}
		);

		overlays.default = local_overlay;
		modules = (import ./modules-all {}) //
		          (import ./modules-linux {}) //
		          (import ./modules-darwin {});
		packages = import ./overlays/packages.nix { pkgs = stable; };
	};
}