python3: Split pip into separate source package

Packaging pip from a separate source package allows it to stay updated
with upstream.

Host pip will remain installed as part of python3. Host pip is used in a
much more controlled way and so is less critical for it to track
upstream.

This also removes the python-pip-conf package and installs the pip.conf
file as part of python3-pip.

The patch 003-disable-pip-version-check.patch is originally from Debian:
bb079efb8c/debian/patches/disable-pip-version-check.patch

pip was in a separate source package that was removed in
a53d0c5a403d1669e2cf6c59c2be6a9d3ed633a0; this work is not based on that
earlier package.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
(cherry picked from commit eee273507b)

lang/python/python3/Makefile

@@ -43,7 +43,7 @@ HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/Python-$(PKG_VERSION)
 
 PKG_CONFIG_DEPENDS:= \
 	CONFIG_PACKAGE_python3-pkg-resources \
-	CONFIG_PACKAGE_python3-setuptools CONFIG_PACKAGE_python3-pip
+	CONFIG_PACKAGE_python3-setuptools
 
 PKG_BUILD_DEPENDS:=bluez python3/host python-build/host python-installer/host python-wheel/host
 HOST_BUILD_DEPENDS:=bzip2/host libffi/host
@@ -213,29 +213,10 @@ define Build/Compile/python3-setuptools
 endef
 endif # CONFIG_PACKAGE_python3-setuptools
 
-ifdef CONFIG_PACKAGE_python3-pip
-define Build/Compile/python3-pip
-	$(HOST_PYTHON3_PIP_VARS) \
-	$(HOST_PYTHON3_PIP) \
-		install \
-		--ignore-installed \
-		--progress-bar off \
-		--root=$(PKG_BUILD_DIR)/install-pip \
-		--prefix=/usr \
-		$(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON3_PIP_VERSION)-py3-none-any.whl
-	$(call PatchDir,$(PKG_BUILD_DIR)/install-pip/usr/lib/python$(PYTHON3_VERSION)/site-packages,./patches-pip,)
-endef
-else
-define Build/Compile/python3-pip
-	ls $(PKG_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON3_PIP_VERSION)-py3-none-any.whl
-endef
-endif # CONFIG_PACKAGE_python3-pip
-
 define Build/Compile
 	$(call Build/Compile/Default)
 	# Use host pip to install python-setuptools
 	$(call Build/Compile/python3-setuptools)
-	$(call Build/Compile/python3-pip)
 endef
 
 define Build/InstallDev
@@ -366,6 +347,7 @@ HOST_CONFIGURE_ARGS += \
 define Host/Configure
 	$(SED) 's/^ENABLE_USER_SITE = None$$$$/ENABLE_USER_SITE = False/' $(HOST_BUILD_DIR)/Lib/site.py
 	$(call Host/Configure/Default)
+	ls $(HOST_BUILD_DIR)/Lib/ensurepip/_bundled/pip-$(PYTHON3_PIP_VERSION)-py3-none-any.whl
 endef
 
 define Host/Install
@@ -390,7 +372,7 @@ define Host/Install
 		touch $(HOST_PYTHON3_PKG_DIR)/.setuptools_installed_$(PYTHON3_SETUPTOOLS_VERSION)-$(PYTHON3_SETUPTOOLS_PKG_RELEASE)
 	)
 	$(if $(wildcard $(HOST_PYTHON3_PKG_DIR)/.pip_installed_$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)),,
-		$(call HostPatchDir,$(HOST_PYTHON3_PKG_DIR),./patches-pip,)
+		$(call HostPatchDir,$(HOST_PYTHON3_PKG_DIR),./patches-host-pip,)
 		touch $(HOST_PYTHON3_PKG_DIR)/.pip_installed_$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)
 	)
 endef

lang/python/python3/files/python3-package-pip.mk

@@ -1,34 +0,0 @@
-#
-# Copyright (C) 2017 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-define Package/python3-pip
-$(call Package/python3/Default)
-  TITLE:=Python $(PYTHON3_VERSION) pip module
-  VERSION:=$(PYTHON3_PIP_VERSION)-$(PYTHON3_PIP_PKG_RELEASE)
-  LICENSE:=MIT
-  LICENSE_FILES:=LICENSE.txt
-#  CPE_ID:=cpe:/a:python:pip # not currently handled this way by uscan
-  DEPENDS:=+python3 +python3-setuptools +python-pip-conf
-endef
-
-define Py3Package/python3-pip/install
-	$(INSTALL_DIR) $(1)/usr/bin $(1)/usr/lib/python$(PYTHON3_VERSION)/site-packages
-	$(CP) $(PKG_BUILD_DIR)/install-pip/usr/bin/pip$(PYTHON3_VERSION) $(1)/usr/bin
-	$(LN) pip$(PYTHON3_VERSION) $(1)/usr/bin/pip3
-	$(LN) pip$(PYTHON3_VERSION) $(1)/usr/bin/pip
-	$(CP) \
-		$(PKG_BUILD_DIR)/install-pip/usr/lib/python$(PYTHON3_VERSION)/site-packages/pip \
-		$(PKG_BUILD_DIR)/install-pip/usr/lib/python$(PYTHON3_VERSION)/site-packages/pip-$(PYTHON3_PIP_VERSION).dist-info \
-		$(1)/usr/lib/python$(PYTHON3_VERSION)/site-packages/
-	find $(1)/usr/lib/python$(PYTHON3_VERSION)/site-packages/ -path '*/__pycache__/*' -delete
-	find $(1)/usr/lib/python$(PYTHON3_VERSION)/site-packages/ -type d -name __pycache__ -delete
-endef
-
-$(eval $(call Py3BasePackage,python3-pip, \
-	, \
-	DO_NOT_ADD_TO_PACKAGE_DEPENDS \
-))

lang/python/python3/patches-pip/001-pep517-pyc-fix.patch

@@ -1,29 +0,0 @@
-diff --git a/pip/_vendor/pep517/in_process/__init__.py b/pip/_vendor/pep517/in_process/__init__.py
-index 281a356cfe26..77acbfc2670b 100644
---- a/pip/_vendor/pep517/in_process/__init__.py
-+++ b/pip/_vendor/pep517/in_process/__init__.py
-@@ -14,13 +14,21 @@ try:
-     except AttributeError:
-         # Python 3.8 compatibility
-         def _in_proc_script_path():
--            return resources.path(__package__, '_in_process.py')
-+            if resources.is_resource(__package__, '_in_process.py'):
-+                return resources.path(__package__, '_in_process.py')
-+            return resources.path(__package__, '_in_process.pyc')
-     else:
-         def _in_proc_script_path():
-+            if resources.files(__package__).joinpath('_in_process.py').is_file():
-+                return resources.as_file(
-+                    resources.files(__package__).joinpath('_in_process.py'))
-             return resources.as_file(
--                resources.files(__package__).joinpath('_in_process.py'))
-+                resources.files(__package__).joinpath('_in_process.pyc'))
- except ImportError:
-     # Python 3.6 compatibility
-     @contextmanager
-     def _in_proc_script_path():
--        yield pjoin(dirname(abspath(__file__)), '_in_process.py')
-+        _in_proc_script = pjoin(dirname(abspath(__file__)), '_in_process.py')
-+        if not os.path.isfile(_in_proc_script):
-+            _in_proc_script = pjoin(dirname(abspath(__file__)), '_in_process.pyc')
-+        yield _in_proc_script