Re: [Rd] The install.R and R_PROFILE.R files

From: Prof Brian Ripley <>
Date: Sun 05 Feb 2006 - 16:01:27 GMT

I had a bumpy ride with this one.

Ruuid/src/ refers to src/include, which is not in a binary distribution so cannot be installed from an installed version of R 2.2.1. (That's a bug report.)

graph throws an S4 signature error in R-devel.

After fixing those, it works with LazyLoad on Windows but not in Unix where there is an error in the INSTALL script which I have now fixed.

On Thu, 2 Feb 2006, Seth Falcon wrote:

> Thanks for the explaination of LazyLoad, that's very helpful.
> On 1 Feb 2006, wrote:
>> There is no intention to withdraw SaveImage: yes. Rather, if
>> lazy-loading is not doing a complete job, we could see if it could
>> be improved.
> It seems to me that LazyLoad does something different with respect to
> packages listed in Depends and/or how it interacts with namespaces.
> I'm testing using the Bioconductor package graph and find that if I
> change SaveImage to LazyLoad I get the following:
> ** preparing package for lazy loading
> Error in makeClassRepresentation(Class, properties, superClasses, prototype, :
> couldn't find function "getuuid"
> Looking at the NAMESPACE for the graph package, it looks like it is
> missing some imports. I added lines:
> import(Ruuid)
> exportClasses(Ruuid)
> Aside: am I correct in my reading of the extension manual that if one
> uses S4 classes from another package with a namespace, one
> must import the classes and *also* export them?
> Now I see this:
> ** preparing package for lazy loading
> Error in getClass("Ruuid") : "Ruuid" is not a defined class
> Error: unable to load R code in package 'graph'
> Execution halted
> But Ruuid _is_ defined and exported in the Ruuid package.
> Is there a known difference in how dependencies and imports are
> handled with LazyLoad as opposed to SaveImage?
> Thanks,
> + seth

Brian D. Ripley,        
Professor of Applied Statistics,
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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