[gentoo-python] [PATCH distutils-r1 4/4] In-source builds: run *_all() phases in best-impl sources copy.

["Michał Górny" <mgorny@gentoo.org>]

This seems a bit safer, and provides users with expectable way of
obtaining the location of those sources. The original sources directory
can be still obtained via ${S}.
---
 gx86/eclass/distutils-r1.eclass | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/gx86/eclass/distutils-r1.eclass b/gx86/eclass/distutils-r1.eclass
index 0c5abff..7a295c2 100644
--- a/gx86/eclass/distutils-r1.eclass
+++ b/gx86/eclass/distutils-r1.eclass
@@ -580,6 +580,9 @@ distutils-r1_run_phase() {
 # @INTERNAL
 # @DESCRIPTION:
 # Run the given command, restoring the best-implementation state.
+#
+# If in-source build is used, the command will be run in the copy
+# of sources made for the best Python interpreter.
 _distutils-r1_run_common_phase() {
 	local DISTUTILS_ORIG_BUILD_DIR=${BUILD_DIR}
 
@@ -590,8 +593,16 @@ _distutils-r1_run_common_phase() {
 
 	export EPYTHON PYTHON PYTHONPATH
 
+	if [[ ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
+		pushd "${BUILD_DIR}"/.. >/dev/null || die
+	fi
+
 	einfo "common: running ${1}"
 	"${@}"
+
+	if [[ ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
+		popd >/dev/null || die
+	fi
 }
 
 # @FUNCTION: _distutils-r1_multijob_init
-- 
1.8.1.4