[R-sig-Debian] Dependency problem with "python-rpy2" package

[Vincent Lemoine]

Hello,

I have a problem with package "python-rpy2" with Debian Wheezy repository.

I use this repo :
deb http://cran.r-project.org/bin/linux/debian wheezy-cran3/

This package depends on "python-singledispatch" but it doesn't exist in official Debian repo...

Could you help me to fix this issue ?

Thanks a lot,