[galaxy-dev] Sharing tool definitions between XML files

Hi all,

I'm wondering if there is any established way to share parameter definitions between tool wrapper XML files?

For example, I am currently working on NCBI BLAST+ wrappers, and these tools have a lot in common. For example, the output format option will be a select parameter, and it will be the same for blastn, blastp, tblastn, etc. I can just cut and paste the definition but this seems inelegant and will be a long term maintenance burden if it ever needs updating (lots of places would need to be updated the same way). I'd like to have a shared XML snippet defining this parameter which I could then reference/include from each tool wrapper than needs it.

I'm thinking of something like XML's <!ENTITY ...> might work. Is this possible?

Peter