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[Launchpad Bug Tracker <1401390@xxxxxxxxxxxxxxxxxx>]

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There appears to be a package dependency cascade that occurred approx 12
hours ago.  Attempting to install libboost-all-dev causes this:  "0
upgraded, 791 newly installed, 0 to remove and 3 not upgraded."

The 791 packages include much of the gnome and kde desktops, a web
browser, some chat clients, all of X11 .. which is crazy for a package
needed to compile C++ programs for a server.

I traced the dependencies: its a rather long, boring chain ... it
depends on stuff which depends on  libboost-mpi1.54.0  which causes 694
packages to be installed

Tracing through eventually leads to  libhwloc5 which seems like it
should be harmless ..  but that leads to libopencl1  which is a virtual
package.  If you recall, opencl is a GPU general-purpose-computing
thing, so, unsurprisingly, we see a dependence on nvidia:

Package libopencl1 is a virtual package provided by:
  nvidia-libopencl1-331-updates 331.113-0ubuntu0.0.4
  nvidia-libopencl1-331 331.113-0ubuntu0.0.4
  nvidia-libopencl1-304-updates 304.125-0ubuntu0.0.1
  nvidia-libopencl1-304 304.125-0ubuntu0.0.1
  ocl-icd-libopencl1 2.1.3-4

Next: apt-get  install nvidia-libopencl1-331-updates  results in: 0
upgraded, 681 newly installed, 0 to remove and 3 not upgraded.

Tracing through that, we get to  nvidia-331-updates  which requires nvidia-prime which causes this:  
0 upgraded, 696 newly installed, 0 to remove and 3 not upgraded.

This is on a server that doesn't have a graphics card ..

It appears that nvidia-prime is the prime suspect, here: somehow,
libhwloc5 , through libopencl, requies nvidia drivers  to be installed,
but the nvidia drivers require a package that cause the gnome+kde
desktops to be installed ...

** Affects: nvidia-graphics-drivers-331 (Ubuntu)
     Importance: High
         Status: Confirmed


** Tags: bot-comment
-- 
apt-get install  nvidia-331 triggers 691 packages to be installed
https://bugs.launchpad.net/bugs/1401390
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