[gentoo-python] [PATCH distutils-r1] Pass --build-platlib & --build-purelib instead of --build-lib.

[Michał Górny]

This allows splitting the library directories back without replacing
the whole esetup.py invocation.

Needed for wxpython, https://bugs.gentoo.org/show_bug.cgi?id=455332
---
 gx86/eclass/distutils-r1.eclass | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/gx86/eclass/distutils-r1.eclass b/gx86/eclass/distutils-r1.eclass
index 5c628ed..e1c06dd 100644
--- a/gx86/eclass/distutils-r1.eclass
+++ b/gx86/eclass/distutils-r1.eclass
@@ -234,8 +234,17 @@ esetup.py() {
 		add_args+=(
 			build
 			--build-base "${BUILD_DIR}"
-			# using a single directory for them helps us export ${PYTHONPATH}
-			--build-lib "${BUILD_DIR}/lib"
+
+			# using a single directory for them helps us export
+			# ${PYTHONPATH} and ebuilds find the sources independently
+			# of whether the package installs extensions or not
+			#
+			# note: due to some packages (wxpython) relying on separate
+			# platlib & purelib dirs, we do not set --build-lib (which
+			# can not be overriden with --build-*lib)
+			--build-platlib "${BUILD_DIR}/lib"
+			--build-purelib "${BUILD_DIR}/lib"
+
 			# make the ebuild writer lives easier
 			--build-scripts "${BUILD_DIR}/scripts"
 		)
-- 
1.8.1.5