[Fedora-packaging] rpm and backward compatibility

[Ian Leonard]

Hi,

I've just installed F12 and now can't generate rpms that work on older (FC6,
in this case) distros.

The problem is the payload compression:

error: Failed dependencies:
rpmlib(PayloadIsXz) <= 5.2-1 is needed by ......

This appears to be caused by a change in the compression library. Google
suggests that the older
algorithm can be selected with something like:

%_binary_payload    w2.lzdio

to the spec file

When building I get:

error: line 22: Unknown tag: w2.xzdio    w2.lzdio

What would be the correct syntax?

Thanks.