We autogenerate RPM Requires/Provides in a few projects, and it's
quite nice. eg: supermin-devel has:
$ rpm -ql supermin-devel
/usr/lib/rpm/fileattrs/supermin.attr
/usr/lib/rpm/supermin-find-requires
and this means other packages that contain supermin appliances can
simply put their appliance in a particular directory matching the name
"*/supermin.d/packages/" and (since they have to BuildRequire
supermin-devel anyway) RPM will create the correct dependencies
automatically.
Great! But ...
I'd like to use it to autogenerate nbdkit plugin Provides, where the
presence of a file named something like %{_libdir}/nbdkit/plugins/*.so
should generate a Provides with the plugin name, eg:
$ rpm -qf --provides /usr/lib64/nbdkit/plugins/nbdkit-curl-plugin.so
nbdkit-curl-plugin = 1.21.7-1.fc33
Right now we list them explicitly:
https://src.fedoraproject.org/rpms/nbdkit/blob/master/f/nbdkit.spec#_161
The problem is all the current plugins exist in nbdkit itself. nbdkit
is not a BuildRequire of nbdkit, so it cannot provide RPM rules for
itself. Doing so would create a nasty circular dependency that makes
bootstrapping awkward.
I could create a subpackage with the RPM rules, which is still a
circular dependency but at least the subpackage would be noarch and
wouldn't depend on anything else.
This is getting complicated - is there some easier thing I'm missing here?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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