[Buildroot] setup.py: issue with python path

[Ludovic Desroches <ludovic.desroches@atmel.com>]

Hello,

I want to add a new package to buildroot: lava-test. Installation is 
done by setup.py.
Having a look to what was done for some packages as python setuptools, I 
did this:

LAVA_TEST_VERSION = 0.7
LAVA_TEST_SOURCE = lava-test-$(LAVA_TEST_VERSION)-2012.04.tar.gz
LAVA_TEST_SITE = https://launchpad.net/lava-test/trunk/2012.04/+download/
LAVA_TEST_DEPENDENCIES = python-setuptools

define LAVA_TEST_INSTALL_TARGET_CMDS
   (cd $(@D); 
PYTHONPATH="$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages"\
   $(HOST_DIR)/usr/bin/python setup.py install --prefix=$(TARGET_DIR)/usr)
endef

$(eval $(call GENTARGETS))

My files are correctly installed on the target but I have this issue:

# lava-test reset
-sh: lava-test: not found
# cat /usr/bin/lava-test
#!/home/ldesroches/workspace/buildroot/output/host/usr/bin/python
# EASY-INSTALL-ENTRY-SCRIPT: 'lava-test==0.7','console_scripts','lava-test'
__requires__ = 'lava-test==0.7'
import sys
from pkg_resources import load_entry_point

sys.exit(
    load_entry_point('lava-test==0.7', 'console_scripts', 'lava-test')()
)
#

Do you know how changing this python path? Is it possible to give the 
target python path instead of using PYTHON_PATH.


Thanks

Regards

Ludovic