unable to install libxcomposite-dev

[Christoph Sturm]

hi all!

trying to install libxcomposite-dev results in this error:
zen# apt-get install libxcomposite-dev
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  libxfixes-dev
The following NEW packages will be installed:
  libxcomposite-dev libxfixes-dev
0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
2 not fully installed or removed.
Need to get 0B/324kB of archives.
After unpacking 651kB of additional disk space will be used.
Do you want to continue? [Y/n] y

Preconfiguring packages ...
(Reading database ... 135712 files and directories currently installed.)
Unpacking libxfixes-dev (from .../libxfixes-dev_6.8.1-1ubuntu1_i386.deb) ...
dpkg: error processing
/var/cache/apt/archives/libxfixes-dev_6.8.1-1ubuntu1_i386.deb
(--unpack):
 trying to overwrite `/usr/X11R6/include/X11/extensions/Xfixes.h',
which is also in package libxext-dev
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Unpacking libxcomposite-dev (from
.../libxcomposite-dev_6.8.1-1ubuntu1_i386.deb) ...
dpkg: error processing
/var/cache/apt/archives/libxcomposite-dev_6.8.1-1ubuntu1_i386.deb
(--unpack):
 trying to overwrite `/usr/X11R6/include/X11/extensions/Xcomposite.h',
which is also in package libxext-dev
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libxfixes-dev_6.8.1-1ubuntu1_i386.deb
 /var/cache/apt/archives/libxcomposite-dev_6.8.1-1ubuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

-- 
christoph.sturm at gmail.com