ubuntu-desktop-next conflicts with ubuntu-gnome-desktop

And I would like to try/use both...

kai@Kai-Thinkpad:~$ sudo apt-get install ubuntu-gnome-desktop
[sudo] password for kai:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  argyll cheese deja-dup-backend-cloudfiles deja-dup-backend-s3 evolution
  evolution-common evolution-plugins fonts-cantarell gdm geoclue-2.0
  gir1.2-accountsservice-1.0 gir1.2-caribou-1.0 gir1.2-champlain-0.12
  gir1.2-clutter-1.0 gir1.2-clutter-gst-2.0 gir1.2-cogl-1.0 gir1.2-coglpango-1.0
  gir1.2-evince-3.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-gdesktopenums-3.0
  gir1.2-gdm-1.0 gir1.2-geocodeglib-1.0 gir1.2-gkbd-3.0 gir1.2-gnomedesktop-3.0
  gir1.2-gtkchamplain-0.12 gir1.2-gtkclutter-1.0 gir1.2-gtop-2.0
  gir1.2-gweather-3.0 gir1.2-mutter-3.0 gir1.2-nmgtk-1.0 gir1.2-polkit-1.0
  gir1.2-rest-0.7 gir1.2-totem-1.0 gir1.2-tracker-1.0 gir1.2-upowerglib-1.0
  gir1.2-xkl-1.0 gir1.2-zpj-0.0 gjs gnome-backgrounds gnome-color-manager
  gnome-control-center gnome-documents gnome-icon-theme-extras
  gnome-icon-theme-full gnome-maps gnome-online-accounts gnome-online-miners
  gnome-session gnome-settings-daemon gnome-shell gnome-shell-common
  gnome-shell-extensions gnome-sushi gnome-themes-standard
  gnome-themes-standard-data gnome-tweak-tool gnome-weather grilo-plugins-0.2
  gtk2-engines-pixbuf gvfs-backends-goa itstool libcaribou-common libcaribou0
  libchamplain-0.12-0 libchamplain-gtk-0.12-0 libcolord-gtk1 libevolution libgdm1
  libgeocode-glib0 libgfbgraph-0.2-0 libgjs0e libgsf-1-114 libgsf-1-common
  libgtkhtml-4.0-0 libgtkhtml-4.0-common libgtkhtml-editor-4.0-0 libgtkspell3-3-0
  libgupnp-av-1.0-2 libicc2 libimdi0 libmail-spf-perl libmediaart-1.0-0
  libmozjs-24-0 libmusicbrainz5-0 libmutter0d libnetaddr-ip-perl libnss-myhostname
  libpst4 libreoffice-style-tango libtotem0 libtracker-control-1.0-0
  libtracker-miner-1.0-0 libtracker-sparql-1.0-0 libxcb-xf86dri0 libytnef0
  libzapojit-0.0-0 mcp-account-manager-goa mutter mutter-common
  plymouth-theme-ubuntu-gnome-logo plymouth-theme-ubuntu-gnome-text python-boto
  python-cloudfiles python3-aptdaemon.pkcompat re2c realmd sa-compile spamassassin
  spamc totem totem-plugins tracker tracker-extract tracker-miner-fs tracker-utils
  ubuntu-gnome-default-settings ubuntu-gnome-wallpapers
  ubuntu-gnome-wallpapers-trusty unoconv xserver-xephyr yelp-tools zsync
Suggested packages:
  gir1.2-colordgtk-1.0 gnome-video-effects-frei0r evolution-ews
  evolution-plugins-experimental desktop-base gstreamer1.0-libav tango-icon-theme
  razor libdbi-perl pyzor libmail-dkim-perl totem-mozilla gromit tracker-gui
The following packages will be REMOVED:
  packagekit ubuntu-desktop-next
The following NEW packages will be installed:
  argyll cheese deja-dup-backend-cloudfiles deja-dup-backend-s3 evolution
  evolution-common evolution-plugins fonts-cantarell gdm geoclue-2.0
  gir1.2-accountsservice-1.0 gir1.2-caribou-1.0 gir1.2-champlain-0.12
  gir1.2-clutter-1.0 gir1.2-clutter-gst-2.0 gir1.2-cogl-1.0 gir1.2-coglpango-1.0
  gir1.2-evince-3.0 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-gdesktopenums-3.0
  gir1.2-gdm-1.0 gir1.2-geocodeglib-1.0 gir1.2-gkbd-3.0 gir1.2-gnomedesktop-3.0
  gir1.2-gtkchamplain-0.12 gir1.2-gtkclutter-1.0 gir1.2-gtop-2.0
  gir1.2-gweather-3.0 gir1.2-mutter-3.0 gir1.2-nmgtk-1.0 gir1.2-polkit-1.0
  gir1.2-rest-0.7 gir1.2-totem-1.0 gir1.2-tracker-1.0 gir1.2-upowerglib-1.0
  gir1.2-xkl-1.0 gir1.2-zpj-0.0 gjs gnome-backgrounds gnome-color-manager
  gnome-control-center gnome-documents gnome-icon-theme-extras
  gnome-icon-theme-full gnome-maps gnome-online-accounts gnome-online-miners
  gnome-session gnome-settings-daemon gnome-shell gnome-shell-common
  gnome-shell-extensions gnome-sushi gnome-themes-standard
  gnome-themes-standard-data gnome-tweak-tool gnome-weather grilo-plugins-0.2
  gtk2-engines-pixbuf gvfs-backends-goa itstool libcaribou-common libcaribou0
  libchamplain-0.12-0 libchamplain-gtk-0.12-0 libcolord-gtk1 libevolution libgdm1
  libgeocode-glib0 libgfbgraph-0.2-0 libgjs0e libgsf-1-114 libgsf-1-common
  libgtkhtml-4.0-0 libgtkhtml-4.0-common libgtkhtml-editor-4.0-0 libgtkspell3-3-0
  libgupnp-av-1.0-2 libicc2 libimdi0 libmail-spf-perl libmediaart-1.0-0
  libmozjs-24-0 libmusicbrainz5-0 libmutter0d libnetaddr-ip-perl libnss-myhostname
  libpst4 libreoffice-style-tango libtotem0 libtracker-control-1.0-0
  libtracker-miner-1.0-0 libtracker-sparql-1.0-0 libxcb-xf86dri0 libytnef0
  libzapojit-0.0-0 mcp-account-manager-goa mutter mutter-common
  plymouth-theme-ubuntu-gnome-logo plymouth-theme-ubuntu-gnome-text python-boto
  python-cloudfiles python3-aptdaemon.pkcompat re2c realmd sa-compile spamassassin
  spamc totem totem-plugins tracker tracker-extract tracker-miner-fs tracker-utils
  ubuntu-gnome-default-settings ubuntu-gnome-desktop ubuntu-gnome-wallpapers
  ubuntu-gnome-wallpapers-trusty unoconv xserver-xephyr yelp-tools zsync
0 upgraded, 124 newly installed, 2 to remove and 0 not upgraded.
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