Package: libtk8.7 I see:
The following NEW packages will be installed: libtk8.7{ab} (D: libtcl8.7) tk8.7{a} (D: tk, S: libtk8.7) The following packages will be REMOVED: libtcl8.6{pu} (D: libtk8.6, D: tk8.6) libtk8.6{pu} (D: tk8.6) tk8.6{pu} (D: tk, S: libtk8.6) The following packages will be upgraded: tk 1 packages upgraded, 2 newly installed, 3 to remove and 0 not upgraded. Need to get 873 kB of archives. After unpacking 4,278 kB will be freed. The following packages have unmet dependencies: libtk8.7 : Depends: libtcl8.7 (>= 8.7.0-2) but 8.7.0~a1+dfsg-1 is installed The following actions will resolve these dependencies: Remove the following packages: 1) tk [8.6.0+9 (now, unstable)] 2) tk5 [0.6-6.2 (now, unstable)] Keep the following packages at their current version: 3) libtk8.7 [Not Installed] 4) tk8.7 [Not Installed] Accept this solution? [Y/n/q/?] n The following actions will resolve these dependencies: Keep the following packages at their current version: 1) libtcl8.6 [8.6.8+dfsg-2 (now, unstable)] 2) libtk8.6 [8.6.8-2 (now, unstable)] 3) libtk8.7 [Not Installed] 4) tk [8.6.0+9 (now, unstable)] 5) tk8.6 [8.6.8-2 (now, unstable)] 6) tk8.7 [Not Installed]