R gives us a number of perl provides:

perl(File::Copy::Recursive) = 0.31
perl(Text::DelimMatch) = 1.01

This, understandably, confuses apt/yum:

Package perl(File::Copy::Recursive) is a virtual package provided by:
  perl-File-Copy-Recursive 0.35-1.fc7
  R 2.6.0-1.fc7
  R.32bit 2.6.0-1.fc7
You should explicitly select one to install.

Given that these modules are installed by R, but to non-standard directories,
I'm of the opinion they should be filtered.  (Especially when
perl-File-Copy-Recursive works just fine for me :))