root@mybox[/root/]# p -ip virtualbox-modules
Building target list...
Building dependency list...paludis@1202852194: [WARNING] In program paludis (--show-reasons summary --dl-reinstall-scm weekly --log-level warning --dl-reinstall if-use-changed --show-use-descriptions changed) -ip virtualbox-modules:
  ... When performing install action from command line:
  ... When executing install task:
  ... When building dependency list:
  ... When adding PackageDepSpec 'app-emulation/virtualbox-modules':
  ... When adding package 'app-emulation/virtualbox-modules-1.5.4:0::gentoo':
  ... When adding build dependencies as pre dependencies:
  ... When adding PackageDepSpec 'virtual/linux-sources':
  ... When adding installed package 'virtual/linux-sources-2.6.21.7::installed-virtuals (virtual for sys-kernel/vanilla-sources-2.6.21.7:2.6.21.7::installed)':
  ... When adding run dependencies as post dependencies:
  ... When adding PackageDepSpec 'sys-kernel/vanilla-sources':
  ... When adding installed package 'sys-kernel/vanilla-sources-2.6.21.7:2.6.21.7::installed':
  ... When adding run dependencies as post dependencies:
  ... When adding PackageDepSpec 'virtual/dev-manager':
  ... When adding installed package 'virtual/dev-manager-118-r3::installed-virtuals (virtual for sys-fs/udev-118-r3:0::installed)':
  ... When adding run dependencies as post dependencies:
  ... When adding PackageDepSpec 'sys-fs/udev':
  ... When adding installed package 'sys-fs/udev-118-r3:0::installed':
  ... When adding run dependencies as post dependencies:
  ... When adding PackageDepSpec '>=sys-apps/baselayout-1.12.5':
  ... When adding installed package 'sys-apps/baselayout-1.12.11.1:0::installed':
  ... When adding run dependencies as post dependencies:
  ... When adding PackageDepSpec '>=sys-apps/coreutils-5.2.1':
  ... When adding installed package 'sys-apps/coreutils-6.10-r1:0::installed':
  ... Ignoring run dependencies due to exception 'Block: sys-apps/mktemp' (paludis::BlockError)


These packages will be installed:

* sys-apps/coreutils::installed [! blocking]
    Reasons: sys-apps/mktemp-1.5:0::gentoo
* sys-apps/mktemp [N 1.5]
    Reasons: *sys-apps/baselayout-1.12.11.1:0::installed, *sys-apps/debianutils-2.28.2:0::installed
    "allow safe temporary file creation from shell scripts."
* app-emulation/virtualbox-modules [R 1.5.4] <target>
    kernel: (linux)

Total: 2 packages (1 new, 1 rebuild), 1 error