(somewhat related to thread [Rd] R CMD check not reading R_LIBS )
For many years I have maintained R versions by building R (./configure ;
make) in a directory indicating the version number, putting the
directory/bin on my path, and setting R_LIBS_SITE.
It seems only one version can easily be installing in /usr/bin, and in
any case that requires root, so I do not do that. There may be an
advantage to installing somewhere in a directory with the version
number, but that does not remove the need to set my path. (If there is
an advantage to installing I would appreciate someone explaining briefly
what it is.)
My main question is whether there is a better ways to maintaining
multiple versions, in some way that lets users choose which one they are
using?
(The only problem I am aware of with my current way of doing this is:
if the system has some R in /usr/bin then I have to set my preferred
version first, which means shell commands like "man" find R's pager
first, and do not work.)
Thanks,
Paul
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