libsmokeqt-dev and libsmokeqt4-dev should conflict

Binary package hint: libsmokeqt-dev

libsmokeqt-dev and libsmokeqt4-dev both have /usr/lib/libsmokeqt.so but do not have Conflicts on each other.

On Kubuntu Lucid:
$ apt-cache policy libsmokeqt{,4}-dev
libsmokeqt-dev:
  Installed: (none)
  Candidate: 4:3.5.10-1ubuntu4
  Version table:
     4:3.5.10-1ubuntu4 0
        500 http://gb.archive.ubuntu.com/ubuntu/ lucid/universe Packages
libsmokeqt4-dev:
  Installed: (none)
  Candidate: 4:4.4.2-0ubuntu2
  Version table:
     4:4.4.2-0ubuntu2 0
        500 http://gb.archive.ubuntu.com/ubuntu/ lucid/main Packages

$ apt-get install libsmokeqt{,4}-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
  libsmokeqt-dev libsmokeqt4-dev
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 28.7kB of archives.
After this operation, 193kB of additional disk space will be used.
Get: 1 http://gb.archive.ubuntu.com/ubuntu/ lucid/universe libsmokeqt-dev 4:3.5.10-1ubuntu4 [5,198B]
Get: 2 http://gb.archive.ubuntu.com/ubuntu/ lucid/main libsmokeqt4-dev 4:4.4.2-0ubuntu2 [23.5kB]
Fetched 28.7kB in 0s (118kB/s)
Selecting previously deselected package libsmokeqt-dev.
(Reading database ... 352971 files and directories currently installed.)
Unpacking libsmokeqt-dev (from .../libsmokeqt-dev_4%3a3.5.10-1ubuntu4_i386.deb) ...
Selecting previously deselected package libsmokeqt4-dev.
Unpacking libsmokeqt4-dev (from .../libsmokeqt4-dev_4%3a4.4.2-0ubuntu2_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libsmokeqt4-dev_4%3a4.4.2-0ubuntu2_i386.deb (--unpack):
 trying to overwrite '/usr/lib/libsmokeqt.so', which is also in package libsmokeqt-dev 4:3.5.10-1ubuntu4
Errors were encountered while processing:
 /var/cache/apt/archives/libsmokeqt4-dev_4%3a4.4.2-0ubuntu2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)