assert a minimum prereq of perl 5.6

diff --git a/Makefile.PL b/Makefile.PL
index 443bcee..561a699 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -23,6 +23,7 @@ WriteMakefile(
       ? ( 'IO::Scalar' => 0 )
       : ()
     ,
+    'perl'        => '5.006',
   },
   META_MERGE => {
     'meta-spec' => { version => 2 },