[Buildroot] [PATCH v2, 1/4] package/python-cryptography: add host variant

[Fabrice Fontaine]

Since commit 0c7e30b43a5e98abfc8db521a6415b5a5c1c267f,
python-cryptography depends on python3. So python3-cryptography became
redundant at that point. As python3-cryptography is a host-only package,
while python-cryptography is a python-only package, add a host variant
to python-cryptography to be able to drop python3-cryptography.

While at it, drop host-python3-pip and host-python3-six as these
dependencies are not needed. Indeed, pip was never a dependency of
cryptography and six is not a dependency with python3 and will be
dropped in version 3.4 and
https://github.com/pyca/cryptography/commit/e66db8079d3fbd0110e87ece1fd48f4bfd9e48b9

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 package/python-cryptography/python-cryptography.mk | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/package/python-cryptography/python-cryptography.mk b/package/python-cryptography/python-cryptography.mk
index 98c65e1528..1d903b03e9 100644
--- a/package/python-cryptography/python-cryptography.mk
+++ b/package/python-cryptography/python-cryptography.mk
@@ -14,5 +14,8 @@ PYTHON_CRYPTOGRAPHY_LICENSE_FILES = LICENSE LICENSE.APACHE LICENSE.BSD
 PYTHON_CRYPTOGRAPHY_CPE_ID_VENDOR = cryptography_project
 PYTHON_CRYPTOGRAPHY_CPE_ID_PRODUCT = cryptography
 PYTHON_CRYPTOGRAPHY_DEPENDENCIES = host-python-cffi openssl
+HOST_PYTHON_CRYPTOGRAPHY_NEEDS_HOST_PYTHON = python3
+HOST_PYTHON_CRYPTOGRAPHY_DEPENDENCIES = host-python3-cffi host-openssl
 
 $(eval $(python-package))
+$(eval $(host-python-package))
-- 
2.33.0