[ros-release] collada error during apt-get dist-upgrade

[Austin Hendrix]

It looks like the new collada packages that were pulled in recently are 
causing upgrade problems.

I did an apt-get dist-upgrade on my system today, and it looks like 
there's a collision between collada-dom2.4-sp-dev and 
collada-dom2.4-dp-dev, and apt wants to install both at the same time:

$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
   collada-dom2.4-sp-dev
The following NEW packages will be installed:
   collada-dom2.4-sp-dev
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
47 not fully installed or removed.
Need to get 0 B/206 kB of archives.
After this operation, 5,285 kB of additional disk space will be used.
Do you want to continue? [Y/n]
(Reading database ... 333408 files and directories currently installed.)
Preparing to unpack 
.../collada-dom2.4-sp-dev_2.4.4.1-ubuntu1~trusty1_amd64.deb ...
Unpacking collada-dom2.4-sp-dev (2.4.4.1-ubuntu1~trusty1) ...
dpkg: error processing archive 
/var/cache/apt/archives/collada-dom2.4-sp-dev_2.4.4.1-ubuntu1~trusty1_amd64.deb 
(--unpack):
  trying to overwrite 
'/usr/lib/cmake/collada_dom-2.4/collada_dom-config.cmake', which is also 
in package collada-dom2.4-dp-dev 2.4.4.0-ubuntu1~trusty1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
  /var/cache/apt/archives/collada-dom2.4-sp-dev_2.4.4.1-ubuntu1~trusty1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


Thoughts? Known workarounds?

Is there a known reason why apt would want to install the sp and dp 
versions at the same time? Up until now I think I've only had the dp 
version installed.

If the sp and dp versions aren't supposed to be installed at the same 
time, can the maintainer please add a Conflicts: to the package header?

-Austin