[R-SIG-Mac] restoring R 2.11.1 while keeping R 2.12

[David Winsemius]

Installing R 2.12.0 did not overwrite my old 2.11 folder in :
/Library/Frameworks/R.framework/Versions/2.11

RSwitch is able to launch (some) old versions, but I am not sure about  
all. (I now have a collection going back to 2.7)

http://r.research.att.com/RSwitch-1.1.dmg

-- 
David.
On Nov 16, 2010, at 11:11 AM, Ken Knoblauch wrote:

> Hi,
>
> What's the cleanest way to restore R  2.11.1 without clobbering R  
> 2.12?
> I know that pkgutil can be used to forget old receipts in order to  
> upgrade
> to a higher version of R while retaining the lower one and then  
> Rswitch
> can be used to choose the one to run.  But, this didn't seem to work  
> in
> the reverse direction, i.e., I have R 2.12 patched installed and I  
> tried
> to install R 2.11.1 after running pkgutil.  Rswitch did not record  
> that
> R 2.11.1 had been installed and the GUI bombed out on startup (I  
> probably
> have to install the R 2.11.1 GUI separately).
>
> Do I have to uninstall R 2.12 before reinstalling R 2.11.1 and then do
> use pkgutils, or is there a simpler way?
>
> The reason for wanting to do this is that I need to process some  
> documents
> using Sweave that use the cacheSweave package, which currently is not
> working correctly with R 2.12, even though an update has been promised
> imminently.
>
> Thank you.
>
> Ken
>
>
> -- 
> Ken Knoblauch
> Inserm U846
> Stem-cell and Brain Research Institute
> Department of Integrative Neurosciences
> 18 avenue du Doyen Lépine
> 69500 Bron
> France
> tel: +33 (0)4 72 91 34 77
> fax: +33 (0)4 72 91 34 61
> portable: +33 (0)6 84 10 64 10
> http://www.sbri.fr/members/kenneth-knoblauch.html
>
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David Winsemius, MD
West Hartford, CT