R devel - May 2005 - Different package versions on CRAN?

Hello,

I am making changes to some of my packages that are exposed in CRAN. 
Some changes make them incompatible with previous R versions [and I use 
Depends: R (>= 2.1.0)]. I suspect that, as soon as I will upload this 
new version to CRAN, it will replace the old one _everywhere_? However, 
the previous version of these packages remains perfectly usable with R 
1.9.X or 2.0.X. So, will this break the binaries in 
/windows/contrib/1.9|2.0, or will the latest valid binaries of my 
packages remain there, not updated? To put it another way, for a package 
Mypack with version 1.0-1 compatible with all R versions, when I upload 
Mypack version 2.0-0 compatible only with R 2.1.0, what will be the 
result on CRAN regarding Windows binaires?
1?) /windows/contrib/2.1/Mypack_2.0-0.zip
     /windows/contrib/2.0/Mypack_1.0-1.zip  # Not updated
     /windows/contrib/1.9/....              # Idem for all other subdirs

or

2?) /windows/contrib/2.1/Mypack_2.0-0.zip
     ??? error ??? because CRAN tries to update the package for other 
subdirectories and encounters Depends: R (>= 2.1.0) ???

Thanks,

Philippe

..............................................<?}))><........
  ) ) ) ) )
( ( ( ( (    Prof. Philippe Grosjean
  ) ) ) ) )
( ( ( ( (    Numerical Ecology of Aquatic Systems
  ) ) ) ) )   Mons-Hainaut University, Pentagone (3D08)
( ( ( ( (    Academie Universitaire Wallonie-Bruxelles
  ) ) ) ) )   8, av du Champ de Mars, 7000 Mons, Belgium
( ( ( ( (
  ) ) ) ) )   phone: + 32.65.37.34.97, fax: + 32.65.37.30.54
( ( ( ( (    email: Philippe.Grosjean@umh.ac.be
  ) ) ) ) )
( ( ( ( (    web:   http://www.umh.ac.be/~econum
  ) ) ) ) )          http://www.sciviews.org
( ( ( ( (
..............................................................

On Sun, 8 May 2005, Philippe Grosjean wrote:
> I am making changes to some of my packages that are exposed in CRAN. Some 
> changes make them incompatible with previous R versions [and I use Depends:
R
> (>= 2.1.0)]. I suspect that, as soon as I will upload this new version
to
> CRAN, it will replace the old one _everywhere_?
No.  It would not be offered as an update to systems running R < 2.1.0.
> However, the previous version 
> of these packages remains perfectly usable with R 1.9.X or 2.0.X. So, will 
> this break the binaries in /windows/contrib/1.9|2.0, or will the latest
valid
> binaries of my packages remain there, not updated? To put it another way,
for
We do not update binary versions for obselete versions of R.  Just look at 
the dates on the directories: 2.0 was last updated on April 19.  And even 
if we did (the 1.9 directory was AFAIR updated for a bit after 2.0.0 came 
out) the version depending on R >= 2.1.0 would not build and so the last 
good version would be left.


-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595