From a3b4b7bef819140fee1f6e600a7b751bcd667ee7 Mon Sep 17 00:00:00 2001
From: Taku Kodma <79110363+risu729@users.noreply.github.com>
Date: Thu, 28 May 2026 05:59:30 +1000
Subject: [PATCH 1/2] registry: use npm backend for npm on Windows

---
 registry/npm.toml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/registry/npm.toml b/registry/npm.toml
index 417f5ea037..52ec88dd2b 100644
--- a/registry/npm.toml
+++ b/registry/npm.toml
@@ -1,4 +1,10 @@
-backends = ["aqua:npm/cli", "npm:npm"]
+backends = [
+  { full = "aqua:npm/cli", platforms = [
+    "linux",
+    "macos",
+  ] },
+  "npm:npm",
+]
 description = "the package manager for JavaScript"
 idiomatic_files = ["package.json"]
 overrides = ["node"]

From 0e9e0c4fec36bd5342e07528a25ac794f32d8108 Mon Sep 17 00:00:00 2001
From: Taku Kodma <79110363+risu729@users.noreply.github.com>
Date: Thu, 28 May 2026 06:15:20 +1000
Subject: [PATCH 2/2] test: update npm backend expectation on Windows

---
 src/cli/args/backend_arg.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/cli/args/backend_arg.rs b/src/cli/args/backend_arg.rs
index 3b808be7ba..042e012ef2 100644
--- a/src/cli/args/backend_arg.rs
+++ b/src/cli/args/backend_arg.rs
@@ -774,8 +774,16 @@ mod tests {
         let _config = Config::get().await.unwrap();
 
         let fa: BackendArg = "npm".into();
-        assert_str_eq!("aqua:npm/cli", fa.full());
-        assert_eq!(BackendType::Aqua, fa.backend_type());
+        #[cfg(windows)]
+        {
+            assert_str_eq!("npm:npm", fa.full());
+            assert_eq!(BackendType::Npm, fa.backend_type());
+        }
+        #[cfg(not(windows))]
+        {
+            assert_str_eq!("aqua:npm/cli", fa.full());
+            assert_eq!(BackendType::Aqua, fa.backend_type());
+        }
     }
 
     #[tokio::test]