evolution1.5 install fails.

["Carlos Betancourt" <carlos.betancourt@chello.be>]

After adding the following line to my sources.list I try to install
evolution1.5 but have some errors. Help needed, thanks in advance.

deb http://ftp.debian.org/debian/ ../project/experimental main

pundit:~# apt-get --target-release experimental install evolution1.5
[...] 
The following packages have unmet dependencies:
  evolution1.5: Depends: evolution-data-server (>= 0.0.6) but it is not
going to be installed
                Depends: evolution-data-server (>= 0.0.5) but it is not
going to be installed
E: Broken packages

pundit:~# apt-get --target-release experimental install
evolution-data-server
Reading Package Lists... Done
[...] 
The following packages have unmet dependencies:
  evolution-data-server: Depends: libsoup2.2-2 (>= 2.1.7) but it is not
installable
E: Broken packages