Today is a good time to read your apt messages:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED:
alien build-essential debhelper dh-autoreconf dh-strip-nondeterminism g++ g++-4.9 g++-5 libc6-dev libexpat1-dev libjpeg-dev
libjpeg62-turbo-dev libpci-dev libpng12-dev libpython-all-dev libpython-dev libpython2.7-dev libpython3-dev libpython3.5-dev
libsnmp-dev libssl-dev libstdc++-4.9-dev libstdc++-5-dev libtiff5-dev libtool libtool-bin lsb-core python-all-dev python-dev
python2.7-dev python3-dev python3.5-dev testdisk zlib1g-dev
The following NEW packages will be installed:
libntfs-3g871
The following packages have been kept back:
libc6 libc6-i386 libgnutls30:i386 libpulse-mainloop-glib0 libpulse0 libpulsedsp pulseaudio pulseaudio-module-gconf
pulseaudio-module-x11 pulseaudio-module-zeroconf pulseaudio-utils
The following packages will be upgraded:
libasn1-8-heimdal libc-bin libc-dev-bin libc-l10n libgssapi3-heimdal libhcrypto4-heimdal libheimbase1-heimdal libheimntlm0-heimdal
libhx509-5-heimdal libinput10 libkrb5-26-heimdal libroken18-heimdal libwind0-heimdal locales multiarch-support ntfs-3g
16 upgraded, 1 newly installed, 34 to remove and 11 not upgraded.
Need to get 7,038 kB of archives.
After this operation, 338 MB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.