Aggregation and choice

My package requires meta package and there are two packages providing it. When aggregating it to another repository, I got complain about possible choice. How to solve it?

My _aggregate file.

<aggregatelist>
  <aggregate project="home:Lachu:SystemLibraries">
    <package>Libgreattao-core</package>
    <package>libgreattao-module</package>
    <package>libsell</package>
    <package>libreadconfig</package>
  </aggregate>
</aggregatelist> 

It helps to post link to your package on OBS.

I have private instance of OBS. I build packages there, before sending them to network.

I assume you can choose packages using Prefer keyword in your project configuration.

It woks.

osc meta prjconf -e .

I added line
Prefer: libgreattao-module-console