Implemented PEP 405 (Python virtual environments).
diff --git a/Lib/sysconfig.cfg b/Lib/sysconfig.cfg
index 565c0eb..87fb091 100644
--- a/Lib/sysconfig.cfg
+++ b/Lib/sysconfig.cfg
@@ -36,41 +36,41 @@
# User resource directory
local = ~/.local/{distribution.name}
-stdlib = {base}/lib/python{py_version_short}
+stdlib = {installed_base}/lib/python{py_version_short}
platstdlib = {platbase}/lib/python{py_version_short}
purelib = {base}/lib/python{py_version_short}/site-packages
platlib = {platbase}/lib/python{py_version_short}/site-packages
-include = {base}/include/python{py_version_short}{abiflags}
-platinclude = {platbase}/include/python{py_version_short}{abiflags}
+include = {installed_base}/include/python{py_version_short}{abiflags}
+platinclude = {installed_platbase}/include/python{py_version_short}{abiflags}
data = {base}
[posix_home]
-stdlib = {base}/lib/python
+stdlib = {installed_base}/lib/python
platstdlib = {base}/lib/python
purelib = {base}/lib/python
platlib = {base}/lib/python
-include = {base}/include/python
-platinclude = {base}/include/python
+include = {installed_base}/include/python
+platinclude = {installed_base}/include/python
scripts = {base}/bin
data = {base}
[nt]
-stdlib = {base}/Lib
+stdlib = {installed_base}/Lib
platstdlib = {base}/Lib
purelib = {base}/Lib/site-packages
platlib = {base}/Lib/site-packages
-include = {base}/Include
-platinclude = {base}/Include
+include = {installed_base}/Include
+platinclude = {installed_base}/Include
scripts = {base}/Scripts
data = {base}
[os2]
-stdlib = {base}/Lib
+stdlib = {installed_base}/Lib
platstdlib = {base}/Lib
purelib = {base}/Lib/site-packages
platlib = {base}/Lib/site-packages
-include = {base}/Include
-platinclude = {base}/Include
+include = {installed_base}/Include
+platinclude = {installed_base}/Include
scripts = {base}/Scripts
data = {base}