nixos/flake.nix

{
  description = "My homebrew NixOS configurations";

  inputs = {
    nixpkgs.url = github:nixos/nixpkgs/nixos-unstable;

    home-manager = {
      url = github:nix-community/home-manager;
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nixvim = {
      url = github:nix-community/nixvim;
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nethack = {
      url = git+https://git.psf.lt/xezo360hye/nethack?shallow=1;
    };
  };

  outputs = { self, nixpkgs, home-manager, nixvim, nethack, ...  } @ inputs:
  let
    inherit (self) outputs;
    inherit (nixpkgs) lib;

    username = "andrey";
    hostnames = [ "tokishiko" "maidena" ];
    stateVersion = "24.05";

    makeSystem = hostname: {
      "${hostname}" = nixpkgs.lib.nixosSystem {
        specialArgs = { inherit inputs; };
        modules = [
          ./system/common.nix
          ./system/${hostname}.nix
          ./hardware/${hostname}.nix
          {
            system.stateVersion = stateVersion;
            networking.hostName = hostname;
          }
        ];
      };
    };

    extractModule = { homeManagerModules, ... }: homeManagerModules."${lib.head (lib.attrNames homeManagerModules)}";
    homeManagerModules = map extractModule [ nixvim nethack ];
    makeHome = hostname: {
      "${username}@${hostname}" = home-manager.lib.homeManagerConfiguration {
        pkgs = nixpkgs.legacyPackages.x86_64-linux;
        modules = homeManagerModules ++ [
          ./home/${hostname}.nix
          ./home/common.nix
          {
            news.display = "show";
            home.username = username;
            home.homeDirectory = "/home/${username}";
            home.stateVersion = stateVersion;
          }
        ];
      };
    };

    forEachHost = fn: lib.fold lib.mergeAttrs {} (map fn hostnames);
  in {
    nixosConfigurations = forEachHost makeSystem;
    homeConfigurations = forEachHost makeHome;
  };
}