python-attrs: update to 17.4.0, add python3 variant

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

lang/python/python-attrs/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2016 OpenWrt.org
+# Copyright (C) 2016-2018 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -7,13 +7,15 @@
 
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=attrs
-PKG_VERSION:=16.2.0
+PKG_NAME:=python-attrs
+PKG_VERSION:=17.4.0
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://pypi.python.org/packages/6b/71/1682316894ed80b362b9102e7a10997136d8dc1213c36a9f0515c451373a
-PKG_HASH:=136f2ec0f94ec77ff2990830feee965d608cab1e8922370e3abdded383d52001
+PKG_SOURCE:=attrs-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://pypi.python.org/packages/8b/0b/a06cfcb69d0cb004fde8bc6f0fd192d96d565d1b8aa2829f0f20adb796e5
+PKG_HASH:=1c7960ccfd6a005cd9f7ba884e6316b5e430a3f1a6c37c5f87d8b43f83b54ec9
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(BUILD_VARIANT)-attrs-$(PKG_VERSION)
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE
@@ -21,14 +23,29 @@ PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>
 
 include $(INCLUDE_DIR)/package.mk
 $(call include_mk, python-package.mk)
+$(call include_mk, python3-package.mk)
+
+PKG_UNPACK:=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$(PKG_SOURCE)
+
+define Package/python-attrs/Default
+  SECTION:=lang
+  CATEGORY:=Languages
+  SUBMENU:=Python
+  URL:=https://attrs.readthedocs.org/
+endef
 
 define Package/python-attrs
-	SECTION:=lang
-	CATEGORY:=Languages
-	SUBMENU:=Python
-	TITLE:=python-attrs
-	URL:=https://attrs.readthedocs.org/
-	DEPENDS:=+python-light
+$(call Package/python-attrs/Default)
+  TITLE:=python-attrs
+  DEPENDS:=+PACKAGE_python-attrs:python-light
+  VARIANT:=python
+endef
+
+define Package/python3-attrs
+$(call Package/python-attrs/Default)
+  TITLE:=python3-attrs
+  DEPENDS:=+PACKAGE_python3-attrs:python3-light
+  VARIANT:=python3
 endef
 
 define Package/python-attrs/description
@@ -37,9 +54,14 @@ the chores of implementing the most common attribute-related object
 protocols.
 endef
 
-define Build/Compile
-	$(call Build/Compile/PyMod,,install --prefix="/usr" --root="$(PKG_INSTALL_DIR)")
+define Package/python3-attrs/description
+$(call Package/python-attrs/description)
+.
+(Variant for Python3)
 endef
 
 $(eval $(call PyPackage,python-attrs))
 $(eval $(call BuildPackage,python-attrs))
+
+$(eval $(call Py3Package,python3-attrs))
+$(eval $(call BuildPackage,python3-attrs))