python,python3: Disable user site-packages for host Python

Normally, Python will include the user's site-packages directory
(~/.local/lib/python$(PYTHON_VERSION)/site-packages) in it's internal
search path for modules.

This disables this default inclusion for host Python.

This change is applied during Host/Configure instead of as a patch to
keep this setting unchanged for target Python.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/python/Makefile

@@ -298,6 +298,11 @@ HOST_CONFIGURE_ARGS+= \
 	--with-ensurepip=install \
 	CONFIG_SITE=
 
+define Host/Configure
+	$(SED) 's/^ENABLE_USER_SITE = None$$$$/ENABLE_USER_SITE = False/' $(HOST_BUILD_DIR)/Lib/site.py
+	$(call Host/Configure/Default)
+endef
+
 define Host/Compile
 	$(call Host/Compile/Default,python Parser/pgen sharedmods)
 endef

lang/python/python3/Makefile

@@ -292,6 +292,11 @@ HOST_CONFIGURE_ARGS+= \
 	--with-ensurepip=install \
 	CONFIG_SITE=
 
+define Host/Configure
+	$(SED) 's/^ENABLE_USER_SITE = None$$$$/ENABLE_USER_SITE = False/' $(HOST_BUILD_DIR)/Lib/site.py
+	$(call Host/Configure/Default)
+endef
+
 define Host/Compile
 	+$(HOST_MAKE_VARS) $(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) python Parser/pgen
 	+$(HOST_MAKE_VARS) $(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) sharedmods