Hi, I got a amd 64 + debian/pure64 system. R is installed by apt-get so it's no doubt that R is for 64bit. My question is, for those packages, for example, ipred, it's difficult to find in which official debian packages they are. How could I install them? if I used install.packages in R, the packges I get are 64 bit or 32 bit? Thank you all.