only add metadata if there isn't already a META.* to work with

diff --git a/Makefile.PL b/Makefile.PL
index ab57117..c23491f 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -28,6 +28,7 @@ WriteMakefile(
       : ()
     ,
   },
+  -f 'META.yml' ? () : (
   META_MERGE => {
     'meta-spec' => { version => 2 },
     dynamic_config => 0,
@@ -61,5 +62,5 @@ WriteMakefile(
         },
       },
     },
-  },
+  } ),
 );