package compiz-plugins doesn't break compiz-plugins-default and causes a failed install

[Laine Gholson]

Running Ubuntu 14.04.2
package compiz-plugins (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/compiz/libcommands.so', which is also in package compiz-plugins-default 1:0.9.11.3+14.04.20150313-0ubuntu1
compiz-plugins should break compiz-plugins-default because they both use /usr/lib/compiz/libcommands.so

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: compiz-plugins (not installed)
Uname: Linux 3.10.18 armv7l
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.11
AptOrdering:
 compiz-plugins: Install
 compiz-plugins: Configure
Architecture: armhf
BootLog:

CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Thu Jul 2 13:58:02 2015
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DpkgTerminalLog:
 Preparing to unpack .../compiz-plugins_1%3a0.9.11.3+14.04.20150313-0ubuntu1_armhf.deb ...
 Unpacking compiz-plugins (1:0.9.11.3+14.04.20150313-0ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/compiz-plugins_1%3a0.9.11.3+14.04.20150313-0ubuntu1_armhf.deb (--unpack):
  trying to overwrite '/usr/lib/compiz/libcommands.so', which is also in package compiz-plugins-default 1:0.9.11.3+14.04.20150313-0ubuntu1
DuplicateSignature: package:compiz-plugins:(not installed):trying to overwrite '/usr/lib/compiz/libcommands.so', which is also in package compiz-plugins-default 1:0.9.11.3+14.04.20150313-0ubuntu1
ErrorMessage: trying to overwrite '/usr/lib/compiz/libcommands.so', which is also in package compiz-plugins-default 1:0.9.11.3+14.04.20150313-0ubuntu1
GraphicsCard:

Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 0bda:57b9 Realtek Semiconductor Corp.
 Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ProcKernelCmdLine: cros_secure root=/dev/mmcblk0p2 console= splash rootwait ro lsm.module_locking=0 vt.global_cursor_default=0
SourcePackage: compiz
Title: package compiz-plugins (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/compiz/libcommands.so', which is also in package compiz-plugins-default 1:0.9.11.3+14.04.20150313-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)
version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1
version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Thu Jul 2 14:32:34 2015
xserver.configfile: default
xserver.devices:
 input Elan Touchpad TOUCHPAD, id 6
 input cros-ec-spi KEYBOARD, id 7
 input gpio-keys.5 KEYBOARD, id 8
xserver.errors:
 NVIDIA(0): Failed to allocate NVIDIA Error Handler
 NVIDIA(0): Failed to allocate NVIDIA Damage Manager
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.15.1-0ubuntu2.7