[R] lock a package to specific R version

[Prof Brian Ripley]

On Wed, 26 Oct 2011, Uwe Ligges wrote:

>
>
> On 25.10.2011 11:42, Mehmet Suzen wrote:
>> Hi,
>> 
>> I was wondering if it is possible to lock a package to a specific
>> version of R. Dependency attribute in the package DESCRIPTION
>> only accepts>= AFAIU
>> (http://cran.r-project.org/doc/manuals/R-exts.html#fn-3 )
>> 
>> Any work around?
>
> Intervals are possible., and you can restrict them to one version as follows:
>
> Depends: R (>= 2.13.2), R (<= 2.13.2)

Or even use ==

The point of the footnote is that install.packages() will download a 
package only checking any >= requirements (and I suspect it will then 
install a binary version of a package).  R CMD INSTALL will not 
install it from the sources, and library() will not load it.

I don't see why you would want to do this: why would a package work 
with 2.13.1 and not 2.13.2, or 2.13.2 and not 2.14.0?  Ranges may make 
sense.

>
> Uwe Ligges
>
>
>
>> 
>> Thanks,
>> 
>> Mehmet
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>> 
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>
> ______________________________________________
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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