{
  description = "Unified flake for Proxmox base image + live NixOS VMs";

  inputs = {
    # Nixpkgs repo for system packages
    nixpkgs.url = "github:nixos/nixpkgs";
    # nixos-generators lets us produce a "proxmox"-formatted image
    nixos-generators = {
      url = "github:nix-community/nixos-generators";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    # sops-nix secret management
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, nixos-generators, sops-nix,... }:
    let
      system = "x86_64-linux";

      ################################################################################
      # A) Define “live” NixOS VM configurations under nixosConfigurations
      ################################################################################
      liveVMs = {
        traefik = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [ ./hosts/traefik/host.nix ];
        };

        sandbox = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [ ./hosts/sandbox/host.nix ];
        };

        monitoring = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [ ./hosts/monitoring/host.nix ];
        };

        forgejo = nixpkgs.lib.nixosSystem {
          inherit system;
          modules = [ ./hosts/forgejo/host.nix sops-nix.nixosModules.sops ];
        };

        # dockerHost = pkgs.lib.nixosSystem {
        #   inherit system;
        #   modules = [
        #     ./configuration.nix
        #     ./users/plasmagoat.nix
        #     ./hosts/docker-host.nix      # Docker‐Host VM settings (shown below)
        #   ];
        # };
      };

      ################################################################################
      # B) Use nixos-generators to produce “template” images for Proxmox
      ################################################################################

      # 1) Existing Proxmox “base” image generator
      base = nixos-generators.nixosGenerate {
        system = "x86_64-linux";
        modules = [ ./templates/base.nix ];
        format  = "proxmox";  # outputs a .vma.zst suitable for qmrestore
      };

      # 2) A “docker” generator which builds a Proxmox‐ready template
      docker = nixos-generators.nixosGenerate {
        system = "x86_64-linux";
        modules = [ ./templates/docker.nix ];
        format = "proxmox";
      };

    in
    {
      ################################################################################
      # 1) Export “live” VM configs so you can run:
      #     nixos-rebuild switch --flake .#traefik       --target-host root@<traefik-IP>
      #     nixos-rebuild switch --flake .#sandbox       --target-host root@<sandbox-IP>
      #     nixos-rebuild switch --flake .#dockerHost    --target-host root@<dockerHost-IP>
      ################################################################################
      nixosConfigurations = liveVMs;

      ################################################################################
      # 2) Export Proxmox template images under packages.x86_64-linux:
      #
      #     • proxmox            → `nix build .#proxmox`    (generic base)
      #     • docker             → `nix build .#docker`     (docker template)
      ################################################################################
      packages.x86_64-linux = {
        base = base;
        docker = docker;
      };
    };
}