Does not work on !x86 architectures

[Marcin Juszkiewicz]

During image build 'scripts/pip_install.sh' is run. It calls 'pip' with '--binary-only' switch. But pypi provides binaries ONLY for x86 platforms...

At Linaro we plan to use LOCI on aarch64 (arm64) platform. So '--binary-only' switch would need to be handled some way. Probably adding if/else check to make sure that on non-x86 we install all required packages to build Python modules and to remove them after build of those.

[Marcin Juszkiewicz (hrw)]

+ /opt/loci/scripts/pip_install.sh cryptography pymysql python-memcached uwsgi
+ packages='cryptography pymysql python-memcached uwsgi'
+ pip install --no-cache-dir --only-binary :all: --no-compile -c /tmp/wheels/upper-constraints.txt --find-links /tmp/wheels/ cryptography pymysql python-memcached uwsgi
Ignoring asyncio: markers 'python_version == "3.4"' don't match your environment
Ignoring asyncio: markers 'python_version == "3.5"' don't match your environment
Ignoring dnspython3: markers 'python_version == "3.4"' don't match your environment
Ignoring dnspython3: markers 'python_version == "3.5"' don't match your environment
Ignoring mypy: markers 'python_version == "3.4"' don't match your environment
Ignoring mypy: markers 'python_version == "3.5"' don't match your environment
Ignoring jeepney: markers 'python_version == "3.4"' don't match your environment
Ignoring jeepney: markers 'python_version == "3.5"' don't match your environment
Ignoring SecretStorage: markers 'python_version == "3.4"' don't match your environment
Ignoring SecretStorage: markers 'python_version == "3.5"' don't match your environment
Ignoring Django: markers 'python_version == "3.4"' don't match your environment
Ignoring Django: markers 'python_version == "3.5"' don't match your environment
Ignoring cmd2: markers 'python_version == "3.4"' don't match your environment
Ignoring cmd2: markers 'python_version == "3.5"' don't match your environment
Ignoring typed-ast: markers 'python_version == "3.4"' don't match your environment
Ignoring typed-ast: markers 'python_version == "3.5"' don't match your environment
Ignoring pyldap: markers 'python_version == "3.4"' don't match your environment
Ignoring pyldap: markers 'python_version == "3.5"' don't match your environment
Looking in links: /tmp/wheels/
Collecting cryptography===2.2.2 (from -c /tmp/wheels/upper-constraints.txt (line 162))
  Could not find a version that satisfies the requirement cryptography===2.2.2 (from -c /tmp/wheels/upper-constraints.txt (line 162)) (from versions: )
No matching distribution found for cryptography===2.2.2 (from -c /tmp/wheels/upper-constraints.txt (line 162))
The command '/bin/sh -c /opt/loci/scripts/install.sh' returned a non-zero code: 1