diff --git a/pkgs/clan-cli/tests/machine_flake/flake.nix b/pkgs/clan-cli/tests/machine_flake/flake.nix
index 0f76e47..ff220a5 100644
--- a/pkgs/clan-cli/tests/machine_flake/flake.nix
+++ b/pkgs/clan-cli/tests/machine_flake/flake.nix
@@ -11,7 +11,12 @@
         (if builtins.pathExists ./machines/machine1.json
         then builtins.fromJSON (builtins.readFile ./machines/machine1.json)
         else { })
-        { nixpkgs.hostPlatform = "x86_64-linux"; }
+        {
+          nixpkgs.hostPlatform = "x86_64-linux";
+          # speed up by not instantiating nixpkgs twice and disable documentation
+          nixpkgs.pkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
+          documentation.enable = false;
+        }
       ];
     };
   };