nixconfig/flake.nix

# ~/Documents/nix-config/flake.nix
{
  description = "NixOS configurations for laptop and homelab server";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable"; # Added for Home Assistant

    nixos-cosmic = {
      url = "github:lilyinstarlight/nixos-cosmic";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    home-manager = {
      url = "github:nix-community/home-manager/release-25.05";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    flox.url = "github:flox/flox";
  };

  outputs =
    inputs@{
      self,
      nixpkgs,
      nixpkgs-unstable,
      home-manager,
      nixos-cosmic,
      rust-overlay,
      flox,
      ...
    }:
    let
      system = "x86_64-linux";
      hmLib = home-manager.lib;

      # pkgs for the 'nixos' (laptop) configuration
      pkgsForLaptop = import nixpkgs {
        inherit system;
        overlays = [
          rust-overlay.overlays.default
          (import ./overlays/halloy-overlay.nix) # Assuming this overlay is general
        ];
        config = {
          # Global config for laptop pkgs
          allowUnfree = true; # Example, add if needed
        };
      };

      # pkgs for the 'homelab' configuration (main system pkgs)
      pkgsForHomelab = import nixpkgs {
        # Using the stable nixpkgs for homelab base
        inherit system;
        overlays = [
        ];
        config = {
          # Global config for homelab pkgs
          allowUnfree = true; # Example, add if needed
        };
      };

      # Unstable pkgs specifically for Home Assistant on homelab
      pkgsUnstableForHA = import nixpkgs-unstable {
        inherit system;
        config = {
          # Global config for unstable pkgs
          allowUnfree = true; # Example
          # If HA from unstable needs OpenSSL 1.1
          permittedInsecurePackages = [ "openssl-1.1.1w" ];
        };
      };

    in
    {
      nixosConfigurations = {
        nixos = nixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = { inherit inputs system; }; # pkgs will be set via module below
          modules = [
            {
              nixpkgs.pkgs = pkgsForLaptop; # Use the pkgs definition with overlays for 'nixos'
              nix.settings = {
                substituters = [ "https://cosmic.cachix.org/" ];
                trusted-public-keys = [ "cosmic.cachix.org-1:Dya9IyXD4xdBehWjrkPv6rtxpmMdRel02smYzA85dPE=" ];
              };
            }
            nixos-cosmic.nixosModules.default
            ./nixos/configuration.nix
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.extraSpecialArgs = { inherit hmLib; };
              home-manager.users.death916 = {
                imports = [ ./home-manager/home.nix ];
              };
            }
          ];
        };

        homelab = nixpkgs.lib.nixosSystem {
          inherit system;
          # Pass the unstable pkgs set for HA to the homelab configuration
          specialArgs = {
            inherit inputs system;
            unstablePkgsHA = pkgsUnstableForHA;
          };
          modules = [
            { nixpkgs.pkgs = pkgsForHomelab; } # Use the base pkgs definition for 'homelab'
            # Import the unstable Home Assistant module

            ./nixos/homelab.nix # Your main homelab config
            ./nixos/hardware-homelab.nix
            ./modules/home-assistant.nix # Your HA configuration module
            home-manager.nixosModules.home-manager
            {
              home-manager.useGlobalPkgs = true;
              home-manager.useUserPackages = true;
              home-manager.extraSpecialArgs = { inherit hmLib; };
              home-manager.users.death916 = {
                imports = [ ./home-manager/death916-homelab.nix ];
              };
            }
          ];
        };
      };
    };
}