{
  description = "Nixos_Fleet : parc de PC génériques (PXE/USB, disko, jamais chiffré)";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
    disko = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    { self, nixpkgs, disko, ... }:
    {
      nixosConfigurations = {
        usagers = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [
            disko.nixosModules.disko
            ./hosts/usagers/configuration.nix
          ];
        };

        installer-netboot = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [ ./installer/netboot.nix ];
        };

        installer-iso = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [ ./installer/iso.nix ];
        };

        pxe-server = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          modules = [ ./pxe-server/configuration.nix ];
        };
      };
    };
}