diff --git a/nix/continue.nix b/nix/continue.nix
index cc19cd3..ce704b7 100644
--- a/nix/continue.nix
+++ b/nix/continue.nix
@@ -67,9 +67,12 @@ let
     "hyperv-iso.amd64" = general // {
       tags = [ "hyperv" ];
       parallel.matrix = hyperv_list;
+      variables = general.variables // {
+        COMMAND = "packer build -only=\"hyperv-iso.amd64\" -var-file=\"\${distro}\" -var build=\${BUILD} -var cpus=2 -var memory=4096 \${EXCEPT} sources";
+      }
       script = [
         "packer init sources"
-        "echo 'packer build -only=\"hyperv-iso.amd64\" -var-file=\"\${distro}\" -var build=\${BUILD} -var cpus=2 -var memory=4096 \${EXCEPT} sources' > build.ps1"
+        "echo $env:COMMAND > build.ps1"
         "echo 'if (-not $?) { throw \"Error in build\" }' >> build.ps1"
         "cat build.ps1"
         "pwsh .\\build.ps1"