1 files changed, 11 insertions, 5 deletions
diff --git a/deps/npm/lib/install.js b/deps/npm/lib/install.js
index fc1c26aaf0..1aabb46019 100644
--- a/deps/npm/lib/install.js
+++ b/deps/npm/lib/install.js
@@ -710,15 +710,21 @@ function checkEngine (target, cb) {
   var npmv = npm.version
     , force = npm.config.get("force")
     , nodev = force ? null : npm.config.get("node-version")
+    , strict = npm.config.get("engine-strict") || target.engineStrict
     , eng = target.engines
   if (!eng) return cb()
   if (nodev && eng.node && !semver.satisfies(nodev, eng.node)
       || eng.npm && !semver.satisfies(npmv, eng.npm)) {
-    var er = new Error("Unsupported")
-    er.code = "ENOTSUP"
-    er.required = eng
-    er.pkgid = target._id
-    return cb(er)
+    if (strict) {
+      var er = new Error("Unsupported")
+      er.code = "ENOTSUP"
+      er.required = eng
+      er.pkgid = target._id
+      return cb(er)
+    } else {
+      log.warn( "engine", "%s: wanted: %j (current: %j)"
+              , target._id, eng, {node: nodev, npm: npm.version} )
+    }
   }
   return cb()
 }