[Python-3000] Install on Vista / AMD64 AthlonX2 platform

[Michael Urman]

On Tue, Jun 10, 2008 at 3:32 AM, Mark Hammond <mhammond at skippinet.com.au> wrote:
>> This UAC behavior is controlled by bit 3 of the word count property in
>> the summary information stream - specifically the legacy value zero
>> requests elevation. Unfortunately, it's not feasible to transform or
>> otherwise change this at run-time, so you have to know ahead of time.
>> If it's set to not require administrator privileges, it can only
>> successfully install into machine locations if it was launched by a
>> full administrator context.
>
> I only tested the python3 installer using "install for all users", and it did correctly prompt for UAC during the install, after "install for all users" is selected.  Previous testing of the 2.x MSI installers shows that if you select "only for me", UAC is not requested, and I expect this installer will do the same.  Note that this is *during* the install process, not at the very start (ie, UAC is not unconditional).  FWIW, these issues don't relate specifically to the x64 version of Vista.
>
> As mentioned, it installed (including UAC prompting) just fine for me just a few hours ago...

Right. This prompt-at-execute-sequence behavior corresponds to bit 3
being zero. However this means it will always prompt for elevation
unless it is already elevated. Thus it is not really capable of doing
a non-administrator per-user install on Vista.

I downloaded the package to confirm, and indeed the "UAC Compliant"
checkbox on ORCA's summary information stream view is not checked.
(It's a bad name for it, but it does correspond, inverted, to that
bit.)

-- 
Michael Urman