[R-sig-Debian] Multiple LibPaths in Fresh Install

[Patrick Richardson]

Using: natty alpha-2

Could anyone englighten me (or point me to a self-enlightment page) as
to why when installing R using:

> apt-get install revolution-mkl r-revolution-revobase revolution-r r-base-core

There are 4 library paths available (installed by default):

> .libPaths()
[1] "/usr/local/lib/R/site-library" "/usr/lib/R/site-library"      
[3] "/usr/lib/R/library"            "/usr/lib64/R/library" 

I'm wondering why; 1) 4 different librarys are created (i am sure there
is a good reason, I just don't know what it is).

2) Can I consolidate all packages into one library? (my instinct says
no, and that trying it would break something)

Any advice (or direction to a "figure it out for yourself" page) would
be appreciated.

Best,

Patrick

> sessionInfo()
R version 2.12.1 (2010-12-16)
Platform: x86_64-pc-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base