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def python_dir(d):
	import os, bb
	staging_incdir = bb.data.getVar( "STAGING_INCDIR", d, 1 )
	for majmin in "3.1 2.7 2.6 2.5 2.4 2.3".split():
		if os.path.exists( "%s/python%s" % ( staging_incdir, majmin ) ): return "python%s" % majmin
	if not "python-native" in bb.data.getVar( "DEPENDS", d, 1 ).split():
		raise Exception("No Python in STAGING_INCDIR. Forgot to build python-native?")
	return "INVALID"

PYTHON_DIR = "${@python_dir(d)}"
PYTHON_SITEPACKAGES_DIR = "${libdir}/${PYTHON_DIR}/site-packages"