[PyQt] Dependency on python3.dll

[Barry]

> On 2 Apr 2017, at 21:51, Florian Bruhin <me at the-compiler.org> wrote:
> 
>> On Fri, Mar 31, 2017 at 10:09:01PM +0100, Barry wrote:
>> Isn't the problem that the venv did not get a copy of a dll that is critical to the python3 world?
>> 
>> I don't see this as a problem with PyQt5 as it will affect others extentions right?
>> (i'm giessing this is becuase of the ABI build stuff).
>> 
>> Am I missing something?
> 
> You're right! I added a comment here, as at least vcruntime140.dll seems
> to be missing too (but happened to be in PATH on AppVeyor):
> https://github.com/pypa/virtualenv/issues/796> 

I always use the microsoft supplied vcredist.exe to install these in my windows kits.
Ther are warnings that cherry picking the dlls can lead to odd errors, especial with memory management,

Something PyPI cannot do.

Barry

> 
> Florian
> 
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