[Rd] optional package dependency

[Simon Urbanek]

On Jan 15, 2010, at 12:18 , Ross Boylan wrote:

> On Fri, 2010-01-15 at 09:19 +0100, Kurt Hornik wrote:
>> The idea is that maintainers typically want to
>> fully check their functionality, suggesting to force suggests by
>> default.
> This might be the nub of the problem.  There are different audiences,
> even for R CMD check.
>
> The maintainer probably wants to check all functionality.  Even then,
> there is an issue if functionality differs by platform.
>
> CRAN probably wants to check all functionality.
>
> An individual user just wants to check the functionality they use.
>
> For example, if someone doesn't want to run my package distributed,  
> but
> wants to see if it works (R CMD check), they need to be able to avoid
> the potentially onerous requirement to install MPI.
>

... that what's why you can decide to run check without forcing  
suggests  - it's entirely up to you / the user as Kurt pointed out ...

Cheers,
Simon