#  Why this ...
my @releases = (
  { ...
    versions => [{ version => $stable,
                  files   => [ "foo-$stable-1.i386.rpm"]
                }]
  }

#  ... not this?
my @releases = (
  { ...
    versions => { version => $stable,
                  files   => [ "foo-$stable-1.i386.rpm"]
                }
  }
);