[wix-users] Conditional uninstall of related product.

[Ven H]

Hi Jacob,

Wow. There are a lot of things to learn from your email. Can you please
throw some light on some of the areas mentioned by your like Conditional
Upgrades, Semi Custom CA, how to dynamically populate the Upgrade table,
what is a BA install option and so on. Sorry for being so naive, but I am
really anxious and eager to learn new things. Please help.

Regards,
Venkatesh

On Tue, Dec 12, 2017 at 11:01 PM, Hoover, Jacob via wix-users <
wix-users at lists.wixtoolset.org> wrote:

> Just throwing an idea out here wanting to see if there are any pitfalls I
> am missing.
>
> I have a new requirement to allow for conditionally leaving older versions
> of my application around (think of it as being similar to Office
> versions).  I have changed the needed Product and Upgrade codes, but as the
> Upgrade table and Windows Installer doesn't allow for conditional upgrades
> I have instead written a semi-custom CA for dynamically populating the
> upgrade table based on a BA install option that I then pass to the MSI as a
> property. I schedule my CA to run always, in both sequences immediately
> before FindRelatedProducts.  My CA appends temporary rows to the Upgrade
> table (based off of a static property which is a list of prior version
> upgrade codes), and then appends the dynamically named action properties to
> the SecureCustomProperties property.
>
> This seems to work in my limited testing, but I would appreciate any
> feedback on the concept.
>
> Thanks,
> Jacob
>
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