--- AnyEvent/constants.pl.PL	2010/03/13 00:08:08	1.3
+++ AnyEvent/constants.pl.PL	2010/03/13 00:09:28	1.4
@@ -1,5 +1,7 @@
 #! perl
 
+# this file is unfortunately only executed at Makefile.PL time
+
 open my $fh, ">lib/AnyEvent/constants.pl"
    or die "lib/AnyEvent/constants.pl: $_[0]\n";
 
@@ -13,7 +15,6 @@
 
 our $WIN32 = $^O =~ /mswin32/i;
 
-
 i CYGWIN => $^O =~ /cygwin/i;
 i WIN32  => $WIN32;