[galaxy-dev] Declaring dependencies on file format ToolShed entries

Dear all, Is there any way for a Tool Shed bundle (or individual tool) to declare a dependency on another Tool Shed bundle (and ideally a minimum version) which provides a datatype? For example, the 'emboss_5' suite depends on the 'emboss_datatypes' entry. Likewise the ncbi_blast_plus suite depends on 'blast_datatypes' to define the 'blastxml' format (and soon nucleotide and protein BLAST databases). As a specific case, I'd like to update my 'blast2go' wrapper to say it now also depends on blast_datatypes because it uses the 'blastxml' format. Similarly some of my sequence filtering/selection tools could be expanded to handle other formats like 'genbank', which is defined in the 'emboss_datatypes' repository. Regards, Peter