python-setuptools,python-pip: Set pip cache dir, disable version check

This adds --cache-dir and --disable-pip-version-check options for host
pip, when "installing" target setuptools and pip.

This also changes the pip command to use $(HOST_PYTHON[3]_PIP) from
python[3]-host.mk.

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

lang/python/python/Makefile

@@ -170,7 +170,10 @@ endef
 
 ifdef CONFIG_PACKAGE_python-setuptools
 define Build/Compile/python-setuptools
-	$(STAGING_DIR_HOSTPKG)/bin/pip install \
+	$(HOST_PYTHON_PIP) \
+		--disable-pip-version-check \
+		--cache-dir "$(DL_DIR)/pip-cache" \
+		install \
 		--ignore-installed \
 		--root=$(PKG_BUILD_DIR)/install-setuptools --prefix=. \
 		$(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/setuptools-$(PYTHON_SETUPTOOLS_VERSION)-py2.py3-none-any.whl
@@ -180,7 +183,10 @@ endif # CONFIG_PACKAGE_python-setuptools
 
 ifdef CONFIG_PACKAGE_python-pip
 define Build/Compile/python-pip
-	$(STAGING_DIR_HOSTPKG)/bin/pip install \
+	$(HOST_PYTHON_PIP) \
+		--disable-pip-version-check \
+		--cache-dir "$(DL_DIR)/pip-cache" \
+		install \
 		--ignore-installed \
 		--root=$(PKG_BUILD_DIR)/install-pip --prefix=. \
 		$(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON_PIP_VERSION)-py2.py3-none-any.whl

lang/python/python3/Makefile

@@ -174,7 +174,10 @@ endef
 
 ifdef CONFIG_PACKAGE_python3-setuptools
 define Build/Compile/python3-setuptools
-	$(STAGING_DIR_HOSTPKG)/bin/pip3 install \
+	$(HOST_PYTHON3_PIP) \
+		--disable-pip-version-check \
+		--cache-dir "$(DL_DIR)/pip-cache" \
+		install \
 		--ignore-installed \
 		--root=$(PKG_BUILD_DIR)/install-setuptools --prefix=. \
 		$(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/setuptools-$(PYTHON3_SETUPTOOLS_VERSION)-py2.py3-none-any.whl
@@ -184,7 +187,10 @@ endif # CONFIG_PACKAGE_python3-setuptools
 
 ifdef CONFIG_PACKAGE_python3-pip
 define Build/Compile/python3-pip
-	$(STAGING_DIR_HOSTPKG)/bin/pip3 install \
+	$(HOST_PYTHON3_PIP) \
+		--disable-pip-version-check \
+		--cache-dir "$(DL_DIR)/pip-cache" \
+		install \
 		--ignore-installed \
 		--root=$(PKG_BUILD_DIR)/install-pip --prefix=. \
 		$(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON3_PIP_VERSION)-py2.py3-none-any.whl