perl-podulators (pod2man) is needed to build the man page.
gnutls-devel is not really needed for the VDDK plugin alone, it just
avoids TLS appearing to be disabled during ‘./configure’ which might
scare the horses.
Source0: nbdkit-%{version}.tar.gz
BuildRequires: nbdkit-devel >= %{minimum_version}
Source0: nbdkit-%{version}.tar.gz
BuildRequires: nbdkit-devel >= %{minimum_version}
+BuildRequires: perl-podlators
+BuildRequires: gnutls-devel
Requires: nbdkit >= %{minimum_version}
Requires: nbdkit >= %{minimum_version}