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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