Why am I unable to using rsync to install modules and appear to have to use pip install instead?

[Robert Nicholson]

Ok this was due to an install of miniconda then choosing to unconditionally install an older version of cryptography.

> On Feb 10, 2021, at 3:40 PM, Robert Nicholson <robert.nicholson at gmail.com> wrote:
> 
> Just reinstalling cryptography with pip install seems to have fixed my issue.
> 
> Any pointers on why?
> 
>> On Feb 10, 2021, at 3:21 PM, Robert Nicholson <robert.nicholson at gmail.com> wrote:
>> 
>> I’m using Python 3.7.0
>> 
>> so I have multiple environments all on the same architecture with the same python release using anonconda.
>> 
>> What I discovered was that if I install the cryptography module in my dev / uat and then tried to synchronize to production server using rsync I ended up with errors relating to dependencies of the cryptography module. 
>> 
>> Specifically 
>> 
>> Cannot import name ‘_get_backend’
>> 
>> these errors appear to have gone away if I actually use pip install cryptography==3.2.1  instead of using rsync from an existing install machine.
>> 
>> why is this the case?
>> 
>> 
>> 
>