> I would like to be able to specify
>
> <d> : mytool:include
>
> So that when mytool is invoked it is invoked for example with
>
> mytool -dir d


An alternate way of doing that is to tag the .ext files the tools act
upon with :

<**/.*ext> : dir(d)

And have the following pflag rule :

pflag ["mytool"] "dir" (fun d -> S [ A "-dir"; P d])

Of course the rules that invoke mytool should add the tag "mytool" to
the command tags.

Best,

Daniel