diff --git a/manifests/install.pp b/manifests/install.pp
index 10a7277..364fecb 100644
--- a/manifests/install.pp
+++ b/manifests/install.pp
@@ -2,13 +2,21 @@
   $version  = $::whats::version,
   $provider = $::whats::provider,
   ) {
-    $deps = ['gcc','ruby-devel']
-    package {$deps:
-      ensure => installed,
-    } ->
+
+    if ! defined(Package['gcc']) {
+      packge {'gcc':
+        ensure => installed,
+      }
+    }
+    if ! defined(Package['ruby-devel']) {
+      packge {'ruby-devel':
+        ensure => installed,
+      }
+    }
+
     package {'puppet-whats':
       ensure   => $version,
       provider => $provider,
+      require  => [Package['gcc'],Package['ruby-devel']],
     }
-
   }