diff --git a/artiq-fast/wfvm/win.nix b/artiq-fast/wfvm/win.nix
index 61faa2e..356b4d8 100644
--- a/artiq-fast/wfvm/win.nix
+++ b/artiq-fast/wfvm/win.nix
@@ -205,7 +205,7 @@ let
     buildInputs = [
       paramikoClient
       qemu
-    ];
+    ] ++ (v.buildInputs or []);
   } (let
     script = pkgs.writeScript "${v.name}-script" v.script;
     qemuParams = mkQemuFlags [