Dependencies for biblatex and friends

[Moritz Wemheuer]

> I installed them,

Thanks

>      All biblatex-... packages bundles depend at least on biblatex,
> 
> Sorry, I am not enthused about adding that.

Fair enough. I'm mainly interested in the dependency stuff to set up a 
minimal TeX live for testing my biblatex styles, so I won't be 
installing any other biblatex styles anyway. In any case the biblatex 
dependency of biblatex styles is probably obvious and simple enough.