Useful to me, if noone else...
sudo apt-get install subversion
svn checkout svn://svn.code.sf.net/p/codeblocks/code/trunk codeblocks
sudo apt-get build-dep codeblocks
cd codeblocks
./bootstrap
./configure --with-contrib-plugins=all --prefix=/opt/codeblocks-svn
make
sudo make install
;D
(This will break, of course, as soon as the build dependencies in trunk differ from the build deps in the official repo.)
I thought there is an easier way to trigger a .deb package build, which will handle dependencies.
And Jens keeps them updated in trunk, I'm sure.