[Bioc-devel] help with package dependencies on packages in remote repositories

Hi Joern,

Joern Toedling <toedling at ebi.ac.uk> writes:

In its vignette, my package "macat" requires a large data package,
called "stjudem", that I keep in a local repository. I wrote a small
function that checks if that data package is installed, if not it
retrieves it from the repository, and then loads the data package. This
function is only used in the package's vignette, but seems to work
nicely. However, I get the following two warnings:

1.)
* checking package dependencies ... WARNING
'library' or 'require' calls not declared from:
  mydatapkg

Not sure.  If it is the case that R CMD check gives a warning for any
call to library or require in package code, then there may be nothing
we can do other than making noise on R-devel and asking for that to be
changed.

2.)
* checking package vignettes in 'inst/doc' ... WARNING
* Installing *source* package 'stjudem' ...

You may be able to prevent this warning if you can muffle the output
caused by installing the package.  IIRC, this is hard to do.  But you
may be able to do it with capture.output.

That said, we have a new facility for handling experiment data
packages.  If you are willing to have the data package hosted here:
http://bioconductor.org/packages/1.9/data/experiment/

Then you can solve both problems by putting the data package in
Suggests.  The build system will install it.  An advantage is that it
will be easier for end users to install what is needed to work through
the vignette.

If this is of interest, please send Herve an email (hpages at fhcrc).

I believe both of these warning message are totally unnecessary. Listing
the data package "stjudem" under Suggests does not work, since it is
kept in local repository and therefore not found, resulting in a check
error. Using "suppressWarnings" when using the retrieval function does
also not do the trick.

I tend to agree that these messages are not all that helpful :-\

Bw,

+ seth