lock a package to specific R version

-----Original Message-----
From: Prof Brian Ripley [mailto:ripley at stats.ox.ac.uk]
Sent: 26 October 2011 10:12
To: Uwe Ligges
Cc: Mehmet Suzen; r-help at r-project.org
Subject: Re: [R] lock a package to specific R version

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

Depends: R (>= 2.13.2), R (<= 2.13.2)

Or even use ==

Dear Professor Ripley,

Thank you for the reply. We are maintaining
Internal R packages and build binaries for different
versions of R base, ranging from 2.8.x to 2.13.x
We need to prevent users using "wrong" versions, but
the ones we tested. (we distribute binaries only and package
source base is evolving as well)

Not sure how to address this, initially I was thinking
to put R version in the package version, but package version
in description files only allows x.x.x format which doesn't
give a room.

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.

Ranges would be much more sensible then "==".

Best Regards,

Mehmet
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