refactor(flake): move assembly code out of lib

lib/default.nix

@@ -1,100 +0,0 @@
-{
-  lib,
-  inputs,
-  self,
-}:
-let
-  inherit (lib)
-    attrNames
-    filterAttrs
-    genAttrs
-    flatten
-    hasSuffix
-    mapAttrsToList
-    ;
-
-  registry = import ./registry.nix { inherit lib self; };
-
-  collectNixFiles =
-    dir:
-    flatten (
-      mapAttrsToList (
-        name: type:
-        let
-          path = dir + "/${name}";
-        in
-        if type == "directory" then
-          collectNixFiles path
-        else if type == "regular" && hasSuffix ".nix" name then
-          [ path ]
-        else
-          [ ]
-      ) (builtins.readDir dir)
-    );
-
-  moduleFiles = collectNixFiles (self + "/modules");
-  guestFiles = collectNixFiles (self + "/guests");
-
-  specialArgs = {
-    inherit inputs self;
-    my = self.lib;
-    registry = self.lib.registry.collect { hosts = self.nixosConfigurations; };
-  };
-
-  bridgeName = id: "br-vlan${toString id}";
-
-  guests = import ./guests.nix {
-    inherit
-      inputs
-      lib
-      self
-      specialArgs
-      bridgeName
-      moduleFiles
-      registry
-      ;
-  };
-
-  mkHost =
-    {
-      hostName,
-      system ? "x86_64-linux",
-    }:
-    inputs.nixpkgs.lib.nixosSystem {
-      inherit system specialArgs;
-      modules =
-        moduleFiles
-        ++ guestFiles
-        ++ [
-          inputs.chaotic.nixosModules.default
-          inputs.disko.nixosModules.disko
-          inputs.sops-nix.nixosModules.sops
-          inputs.stylix.nixosModules.stylix
-          registry.module
-          (self + "/hosts/${hostName}")
-          {
-            networking.hostName = hostName;
-            modules.host.enable = true;
-          }
-        ];
-    };
-
-  mkHosts =
-    hostsDir:
-    let
-      hostNames = attrNames (filterAttrs (_name: type: type == "directory") (builtins.readDir hostsDir));
-    in
-    genAttrs hostNames (hostName: mkHost { inherit hostName; });
-in
-{
-  inherit
-    collectNixFiles
-    mkHost
-    mkHosts
-    bridgeName
-    registry
-    ;
-
-  inherit (guests) deriveMac guest;
-
-}