[Rd] simplifying number of R installations on disk

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Fri, 25 Dec 2009 08:23:56 -0500

If R-2.10.0 were the current version of R then by default there will be an R-2.10.0 directory on your machine and when R-2.10.1 comes along a new directory R-2-10.1 will be created if you use the installation defaults.

I normally don't use the defaults but rather put all R-2.10.* versions in the same directory so that R-2.10.1 overwrites R-2.10.0; however, if the first or second number in the version change then I do use a new directory. Also I put any alpha or beta versions of R-2.10 in R-2.10 again overwriting any prior R-2.10 version.

Actually this is already how it works for win-library. That is, R automatically generates a win-library\2.9, a win-library\2.10 but there will not be automatically generated separate libraries for the third level version number or for alpha or beta versions.

I think it would make more sense for the installation procedure of R itself to use the same scheme that win-library uses since otherwise there is an accumulation of too many directories as R changes. It should still be possible to have the current scheme for those who wish to retain it but I doubt that most people really want to keep separate third level versions separately so it would not be the default; instead, a scheme that produces R-2.10, R-2.11, etc. R directories would be the default.

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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Fri 25 Dec 2009 - 13:28:57 GMT

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