guard against double import

diff --git a/lib/Moo.pm b/lib/Moo.pm
index 2f27387..cc8de95 100644 (file)
--- a/lib/Moo.pm
+++ b/lib/Moo.pm
@@ -12,6 +12,7 @@ sub import {
   my $target = caller;
   my $class = shift;
   strictures->import;
+  return if $MAKERS{$target}; # already exported into this package
   *{_getglob("${target}::extends")} = sub {
     _load_module($_) for @_;
     *{_getglob("${target}::ISA")} = \@_;

diff --git a/lib/Moo/Role.pm b/lib/Moo/Role.pm
index 7a7cae1..c27c025 100644 (file)
--- a/lib/Moo/Role.pm
+++ b/lib/Moo/Role.pm
@@ -11,6 +11,7 @@ our %INFO;
 sub import {
   my $target = caller;
   strictures->import;
+  return if $INFO{$target}; # already exported into this package
   # get symbol table reference
   my $stash = do { no strict 'refs'; \%{"${target}::"} };
   *{_getglob "${target}::has"} = sub {

diff --git a/lib/Role/Tiny.pm b/lib/Role/Tiny.pm
index ebf9807..844272f 100644 (file)
--- a/lib/Role/Tiny.pm
+++ b/lib/Role/Tiny.pm
@@ -20,6 +20,7 @@ sub import {
   my $target = caller;
   my $me = $_[0];
   strictures->import;
+  return if $INFO{$target}; # already exported into this package
   # get symbol table reference
   my $stash = do { no strict 'refs'; \%{"${target}::"} };
   # install before/after/around subs