не могу установить yaml-cpp, потому что он конфликтует с yaml-cpp?

Похоже, что yaml-cpp не установлен

sudo apt-get remove yaml-cpp
Package yaml-cpp is not installed, so not removed

Но когда я пытаюсь установить yaml-cpp, я не могу, потому что apt-get вдруг вспоминает старую версию yaml-cpp, которая сейчас конфликтует.

sudo apt-get install yaml-cpp
The following NEW packages will be installed:
  yaml-cpp
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 205 kB of archives.
After this operation, 577 kB of additional disk space will be used.
Get:1 http://packages.ros.org/ros/ubuntu/ precise/main yaml-cpp i386 0.2.7-5precise-20120502-0513-+0000 [205 kB]
Fetched 205 kB in 0s (237 kB/s)   
(Reading database ... 342813 files and directories currently installed.)
Unpacking yaml-cpp (from .../yaml-cpp_0.2.7-5precise-20120502-0513-+0000_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/yaml-cpp_0.2.7-5precise-20120502-0513-+0000_i386.deb (--unpack):
 trying to overwrite '/usr/include/yaml-cpp/emitter.h', which is also in package yaml-cpp0.2.6-dev 0.2.6-4~oneiric
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/yaml-cpp_0.2.7-5precise-20120502-0513-+0000_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)