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[Tully <1401390@xxxxxxxxxxxxxxxxxx>]

I tested with utopic-proposed as well.

installing libhwloc-dev installed 19 total packages from a fresh docker
image.

These were the packages: 
# dpkg -l | grep hwloc
ii  libhwloc-dev:amd64         1.8-1ubuntu1.14.10.1         amd64        Hierarchical view of the machine - static libs and headers
ii  libhwloc-plugins           1.8-1ubuntu1.14.10.1         amd64        Hierarchical view of the machine - plugins
ii  libhwloc5:amd64            1.8-1ubuntu1.14.10.1         amd64        Hierarchical view of the machine - shared libs

New dependency tree
# apt-get install libhwloc-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  libc-dev-bin libc6 libc6-dev libhwloc-plugins libhwloc5 libltdl7 libnuma1 libpci-dev libpci3 libpciaccess0 libxml2 libxml2-dev linux-libc-dev manpages
  manpages-dev ocl-icd-libopencl1 sgml-base xml-core zlib1g-dev
Suggested packages:
  glibc-doc libhwloc-contrib-plugins pciutils pkg-config man-browser opencl-icd sgml-base-doc debhelper
The following NEW packages will be installed:
  libc-dev-bin libc6-dev libhwloc-dev libhwloc-plugins libhwloc5 libltdl7 libnuma1 libpci-dev libpci3 libpciaccess0 libxml2 libxml2-dev linux-libc-dev
  manpages manpages-dev ocl-icd-libopencl1 sgml-base xml-core zlib1g-dev
The following packages will be upgraded:
  libc6
1 upgraded, 19 newly installed, 0 to remove and 24 not upgraded.
Need to get 11.8 MB of archives.
After this operation, 27.0 MB of additional disk space will be used.


I tested a baseline with the original and the problem was not as large as on trusty. 

# dpkg -l | grep hwloc
ii  libhwloc-dev:amd64         1.8-1ubuntu1                 amd64        Hierarchical view of the machine - static libs and headers
ii  libhwloc-plugins           1.8-1ubuntu1                 amd64        Hierarchical view of the machine - plugins
ii  libhwloc5:amd64            1.8-1ubuntu1                 amd64        Hierarchical view of the machine - shared libs


Old dependency tree: 

# apt-get install libhwloc-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  binutils cpp cpp-4.9 dkms fakeroot fglrx-updates-core gcc gcc-4.9 lib32gcc1
  libasan1 libatomic1 libc-dev-bin libc6 libc6-dev libc6-i386 libcilkrts5
  libcloog-isl4 libfakeroot libgcc-4.9-dev libgomp1 libhwloc-plugins libhwloc5
  libisl10 libitm1 liblsan0 libltdl7 libmpc3 libmpfr4 libnuma1 libpci-dev
  libpci3 libpciaccess0 libquadmath0 libtsan0 libubsan0 libxml2 libxml2-dev
  linux-libc-dev make manpages manpages-dev patch sgml-base xml-core
  zlib1g-dev
Suggested packages:
  binutils-doc cpp-doc gcc-4.9-locales dpkg-dev debhelper gcc-multilib
  autoconf automake libtool flex bison gdb gcc-doc gcc-4.9-multilib
  gcc-4.9-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan1-dbg
  liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libquadmath0-dbg
  glibc-doc libhwloc-contrib-plugins pciutils pkg-config make-doc man-browser
  ed diffutils-doc sgml-base-doc
The following NEW packages will be installed:
  binutils cpp cpp-4.9 dkms fakeroot fglrx-updates-core gcc gcc-4.9 lib32gcc1
  libasan1 libatomic1 libc-dev-bin libc6-dev libc6-i386 libcilkrts5
  libcloog-isl4 libfakeroot libgcc-4.9-dev libgomp1 libhwloc-dev
  libhwloc-plugins libhwloc5 libisl10 libitm1 liblsan0 libltdl7 libmpc3
  libmpfr4 libnuma1 libpci-dev libpci3 libpciaccess0 libquadmath0 libtsan0
  libubsan0 libxml2 libxml2-dev linux-libc-dev make manpages manpages-dev
  patch sgml-base xml-core zlib1g-dev
The following packages will be upgraded:
  libc6
1 upgraded, 45 newly installed, 0 to remove and 24 not upgraded.
Need to get 59.3 MB of archives.
After this operation, 226 MB of additional disk space will be used.




** Tags removed: verification-needed
** Tags added: verification-done verification-done-utopic

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-331 in Ubuntu.
https://bugs.launchpad.net/bugs/1401390

Title:
  apt-get install  nvidia-331 triggers 691 packages to be installed

Status in hwloc package in Ubuntu:
  Fix Committed
Status in nvidia-graphics-drivers-331 package in Ubuntu:
  Invalid
Status in hwloc source package in Trusty:
  Fix Committed
Status in nvidia-graphics-drivers-331 source package in Trusty:
  Invalid
Status in hwloc source package in Utopic:
  Fix Committed
Status in nvidia-graphics-drivers-331 source package in Utopic:
  Invalid

Bug description:
  SRU request:

  Please accept hwloc into trusty-proposed.

  [Rationale]
  The libhwloc-plugins package need to depend on ocl-icd-libopencl1 (>= 1.0) | libopencl1 rather than just on libopencl1, since the nvidia driver provides libopencl1 too now.

  [Impact]
  Without a rebuild, the libhwloc-plugins package will pull in the nvidia driver and a massive amount of packages which are not needed (or even recommended). ocl-icd-libopencl1 is the only recommended loader, as NVIDIA's only work with the nvidia driver.

  [Test Case]
  After installing the update, users should be able to install libhwloc-plugins without having nvidia-331 installed as a dependency

  [Regression Potential]
  Low. This is a mere no change rebuild. We only need to make sure that all the newly generated dependencies do not affect the system.


  
  ----------------------------

  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 ...

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