Mandatory Perl build-requires added <https://fedoraproject.org/wiki/Changes/Build_Root_Without_Perl>

perl-Hash-Merge.spec

@@ -9,6 +9,7 @@ Source0:        http://search.cpan.org/CPAN/authors/id/R/RE/REHSACK/Hash-Merge-%
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch:      noarch
 
+BuildRequires:  perl-generators
 BuildRequires:  perl(Test::More), perl(Clone), perl(ExtUtils::MakeMaker)
 BuildRequires:  perl(Test::CPAN::Changes), perl(Test::CheckManifest), perl(Test::Pod)
 BuildRequires:  perl(Test::Pod::Coverage), perl(Test::Pod::Spelling::CommonMistakes)