diff --git a/packages/cli/bin/lildax.cjs b/packages/cli/bin/lildax.cjs
index 24b6c36660..e3491f3a43 100644
--- a/packages/cli/bin/lildax.cjs
+++ b/packages/cli/bin/lildax.cjs
@@ -54,6 +54,25 @@ function supportsAvx2() {
       return false
     }
   }
+  if (platform === "windows") {
+    const command =
+      '(Add-Type -MemberDefinition "[DllImport(""kernel32.dll"")] public static extern bool IsProcessorFeaturePresent(int ProcessorFeature);" -Name Kernel32 -Namespace Win32 -PassThru)::IsProcessorFeaturePresent(40)'
+    for (const executable of ["powershell.exe", "pwsh.exe", "pwsh", "powershell"]) {
+      try {
+        const result = childProcess.spawnSync(executable, ["-NoProfile", "-NonInteractive", "-Command", command], {
+          encoding: "utf8",
+          timeout: 3000,
+          windowsHide: true,
+        })
+        if (result.status !== 0) continue
+        const output = (result.stdout || "").trim().toLowerCase()
+        if (output === "true" || output === "1") return true
+        if (output === "false" || output === "0") return false
+      } catch {
+        continue
+      }
+    }
+  }
   return false
 }
 
diff --git a/packages/cli/script/publish.ts b/packages/cli/script/publish.ts
index ef9d65cd98..5c2ca591f9 100644
--- a/packages/cli/script/publish.ts
+++ b/packages/cli/script/publish.ts
@@ -14,7 +14,7 @@ async function published(name: string, version: string) {
 async function publish(dir: string, name: string, version: string) {
   if (process.platform !== "win32") await $`chmod -R 755 .`.cwd(dir)
   if (await published(name, version)) return console.log(`already published ${name}@${version}`)
-  await $`npm pack`.cwd(dir)
+  await $`bun pm pack`.cwd(dir)
   await $`npm publish *.tgz --access public --tag ${Script.channel}`.cwd(dir)
 }