jinja2: Try to fix jinja2 compilation

patches/packages/to-upstream/0001-jinja2-Provide-packages-for-python2-as-well.patch

-From 0c739b340d6cb6ec41ed1c8b46fb0ec6ac20b76e Mon Sep 17 00:00:00 2001
+From 50f3ea44d93be1ef3714510c662aa1ec24056a86 Mon Sep 17 00:00:00 2001
 From: Michal Hrusecky <michal.hrusecky@nic.cz>
 Date: Tue, 7 Aug 2018 15:14:55 +0200
 Subject: [PATCH] jinja2: Provide packages for python2 as well
@@ -7,12 +7,12 @@ Provide packages for legacy applications till they get ported.
 
 Signed-off-by: Michal Hrusecky <michal.hrusecky@nic.cz>
 ---
- lang/python/Jinja2/Makefile     | 22 +++++++++++++++++++++-
+ lang/python/Jinja2/Makefile     | 28 +++++++++++++++++++++++++++-
  lang/python/MarkupSafe/Makefile | 17 +++++++++++++++++
- 2 files changed, 38 insertions(+), 1 deletion(-)
+ 2 files changed, 44 insertions(+), 1 deletion(-)
 
 diff --git a/lang/python/Jinja2/Makefile b/lang/python/Jinja2/Makefile
-index 7ef9e0b..4021b7d 100644
+index 7ef9e0b..d95eb0b 100644
 --- a/lang/python/Jinja2/Makefile
 +++ b/lang/python/Jinja2/Makefile
 @@ -21,6 +21,7 @@ PKG_UNPACK=$(HOST_TAR) -C $(PKG_BUILD_DIR) --strip-components=1 -xzf $(DL_DIR)/$
@@ -32,7 +32,7 @@ index 7ef9e0b..4021b7d 100644
    VARIANT:=python3
  endef
  
-@@ -38,5 +39,24 @@ unicode support, an optional integrated sandboxed execution
+@@ -38,5 +39,30 @@ unicode support, an optional integrated sandboxed execution
  environment, widely used and BSD licensed.
  endef
  
@@ -52,6 +52,12 @@ index 7ef9e0b..4021b7d 100644
 +environment, widely used and BSD licensed.
 +endef
 +
++ifeq ($(BUILD_VARIANT),python)
++define remove_async
++	rm -rf $(PKG_BUILD_DIR)/jinja2/async*
++endef
++Hooks/Prepare/Post += remove_async
++endif
 +
  $(eval $(call Py3Package,python3-jinja2))
  $(eval $(call BuildPackage,python3-jinja2))