diff --git a/deployment/check/data-model/nixosTest.nix b/deployment/check/data-model/nixosTest.nix
index 45c7201f..0e5b3a6a 100644
--- a/deployment/check/data-model/nixosTest.nix
+++ b/deployment/check/data-model/nixosTest.nix
@@ -66,20 +66,20 @@ in
 
               '
               let
-                system = builtins.currentSystem;
+                args = builtins.fromJSON "${
+                  lib.replaceStrings [ "\"" ] [ "\\\\\"" ] (
+                    lib.strings.toJSON {
+                      inherit sources;
+                    }
+                  )
+                }";
+                inherit (args) sources;
                 configuration = { pkgs, config, ... }: {
                   imports = [
                     ${pathToRoot}/deployment/check/common/sharedOptions.nix
                     ${pathToRoot}/deployment/check/common/targetNode.nix
                   ];
 
-                  _module.args = builtins.fromJSON "${
-                    lib.replaceStrings [ "\"" ] [ "\\\\\"" ] (
-                      lib.strings.toJSON {
-                        inherit sources;
-                      }
-                    )
-                  }";
                   enableAcme = ${lib.strings.toJSON config.enableAcme};
                   acmeNodeIP = if config.enableAcme then config.nodes.acme.networking.primaryIPAddress else null;
 
@@ -89,7 +89,18 @@ in
                     autoconf
                   ];
                 };
-                os = import "${sources.nixpkgs}/nixos" { inherit system configuration; };
+                eval = import "${sources.nixpkgs}/nixos/lib/eval-config.nix" {
+                  system = builtins.currentSystem;
+                  specialArgs = {
+                    inherit sources;
+                  };
+                  modules = [ configuration ];
+                };
+                os = {
+                  inherit (eval) pkgs config options;
+                  system = eval.config.system.build.toplevel;
+                  inherit (eval.config.system.build) vm vmWithBootLoader;
+                };
               in
               # import "${pathToRoot}/deployment/nixos.nix" {}
               {