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Fri Jan 9 22:52:05 CET 2015 · https://mail.python.org/pipermail/python-dev/2015-January/137725.html

On 1/9/2015 12:34 PM, David Anthoff wrote:
>> Nothing is merged in yet and everything can still change, so I'm keen to
> hear whatever
>> feedback people have. I've tried to make improvements fairly for
> first-time users
>> through to sysadmins, but if I've missed something big I'd like to hear
> about it before
>> we get too close to alpha 1.
> It would be great if the new installer supported silent, portable installs.
> What I have in mind is a silent installation that drops all the necessary
> files for a working python into a folder, but does not put ANY file anywhere
> else and does not register anything anywhere on the system. So no PATH
> modification, no registering of this install as one of the available python
> interpreters, no uninstall entry or anything like that. By "all the
> necessary files" I mean that it drops things like the MSVC runtime dlls etc
> into that folder into which I'm installing python, but again doesn't try to
> install things like that system or even user wide.
>
> I'll give you my very specific use-case, but I think this might be useful
> for others as well: we are trying to build an installer for some other
> product X that internally requires a python instance to work. This python
> instance should NOT be visible to anything other than product X, i.e. no
> user should ever start it directly or anything like that, it really is an
> implementation detail of product X. If we had an official python installer
> that supported silent, portable installs, I could just call that python
> installer inside the setup program for X, and it would drop a fully working
> python installation into a sub-directory of the install directory of product
> X. And we would be happy :)
>
> The old MSI installer sort of had something like that with the MSI
> administrative install option. But it never really worked because the
> administrative install didn't drop the MSVC runtime dlls anywhere, as far as
> I could tell. At some point I hacked around that by modifying the MSI file
> in my setup program to also drop the MSVC runtime dlls, but that was VERY
> hacky...
>
> Thanks,
> David
Sounds like a nice feature.
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[Python-Dev] New Windows installer for Python 3.5