It appears that if we depend on 'ros' in our stack.xml, the 'devel'
build is not done due to this message:

<quote>
devel_fuerte_orocos_toolchain_precise_amd64 - Build # 16 - Fixed:

Check console output at
http://build.willowgarage.com//job/devel_fuerte_orocos_toolchain_precise_amd64/16/
to view the results.

Result: Not all dependencies of stack orocos_toolchain have a Debian
package. Skipping this devel build

</quote>

It tries to install ros-fuerte-ros, sees it's already there and then
skips the build instead of proceeding...

Can I just remove the dependency ? Will this not break other builds
that do rely on it ?