... I ended up with a duplicate directory. The repo definitions might be slightly different that can cause this...
I can help you make an initial version, from there on it's fairly painless.
BTW I had some errors installing (different dependencies/Extras clash): dpkg: error processing /var/cache/apt/archives/simplejson_2.0.9_armel.deb (--unpack): trying to overwrite `/usr/lib/python2.5/site-packages/simplejson/_speedups.so', which is also in package python-simplejson
Also, just libicu takes some 13MB of rootfs space... it would really be cool to get it optified (there, another reason for using the autobuilder as it would do this for you automatically )