Install missing deps, even if they are in bundleDependencies

lib/install.js

@@ -722,27 +722,41 @@ function write (target, targetFolder, context, cb_) {
     })
   }
 
+  var bundled = []
+
   chain
     ( [ [ cache.unpack, target.name, target.version, targetFolder
         , null, null, user, group ]
       , [ fs, "writeFile"
         , path.resolve(targetFolder, "package.json")
         , JSON.stringify(target, null, 2) + "\n" ]
-      , [ lifecycle, target, "preinstall", targetFolder ] ]
+      , [ lifecycle, target, "preinstall", targetFolder ]
+      , function (cb) {
+          if (!target.bundleDependencies) return cb()
+
+          var bd = path.resolve(targetFolder, "node_modules")
+          fs.readdir(bd, function (er, b) {
+            // nothing bundled, maybe
+            if (er) return cb()
+            bundled = b || []
+            cb()
+          })
+        } ]
 
     // nest the chain so that we can throw away the results returned
     // up until this point, since we really don't care about it.
-    , function (er) {
+    , function X (er) {
       if (er) return cb(er)
 
       // before continuing to installing dependencies, check for a shrinkwrap.
       readDependencies(context, targetFolder, {}, function (er, data, wrap) {
         var deps = Object.keys(data.dependencies || {})
 
-        // don't install bundleDependencies
+        // don't install bundleDependencies, unless they're missing.
         if (data.bundleDependencies) {
           deps = deps.filter(function (d) {
-            return data.bundleDependencies.indexOf(d) === -1
+            return data.bundleDependencies.indexOf(d) === -1 ||
+                   bundled.indexOf(d) === -1
           })
         }