[Rd] Different package versions on CRAN?

[Philippe Grosjean]

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

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( ( ( ( (    Prof. Philippe Grosjean
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( ( ( ( (    Numerical Ecology of Aquatic Systems
  ) ) ) ) )   Mons-Hainaut University, Pentagone (3D08)
( ( ( ( (    Academie Universitaire Wallonie-Bruxelles
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