[wix-users] Checking for Product A before installing Product B

[Edwin Castro]

Conditions and Feature selection could possibly result in Product A being
installed but the Component not installed. Even if this is not possible
today, it might become possible in the future and you (or a future
maintainer) will need to remember these things to ensure setup still works
as required.

I'd also recommend using the Upgrade element to detect an installed product.


On Tue, Apr 23, 2019 at 3:11 PM Christopher Painter via wix-users <
wix-users at lists.wixtoolset.org> wrote:

> Same here.  Even the way the question is worded suggests this.   You'd
> also be able to do things like check if a certain version range of a
> product is installed in a way that checking for a component wouldn't.   It
> would also tightly couple the check and have issues if that component was
> ever removed from that product.
>
> There may also be other pitfalls of component searches that I don't
> remember anymore.
>
> ________________________________
> From: wix-users <wix-users-bounces at lists.wixtoolset.org> on behalf of Rob
> Mensching via wix-users <wix-users at lists.wixtoolset.org>
> Sent: Tuesday, April 23, 2019 4:13 PM
> To: WiX Toolset Users Mailing List
> Cc: Rob Mensching
> Subject: Re: [wix-users] Checking for Product A before installing Product B
>
> I'd recommend using Upgrade element.
> _____________________________________________________________
>  Short replies here. Complete answers over there:
> http://www.firegiant.com/
>
>
> -----Original Message-----
> From: wix-users <wix-users-bounces at lists.wixtoolset.org> On Behalf Of
> Swatantra Yadav via wix-users
> Sent: Tuesday, April 23, 2019 1:58 PM
> To: Jacques Eloff <repstosd at gmail.com>; WiX Toolset Users Mailing List <
> wix-users at lists.wixtoolset.org>
> Cc: Swatantra Yadav <swatantra.yadav at skykick.com>
> Subject: Re: [wix-users] Checking for Product A before installing Product B
>
> The component is guaranteed to be in Product A. The code below is of
> Product B. Since I generated the Guid it is not shared by any external
> Product C.
>
> I initially wanted to use RegistrySearch to look for Product A install but
> found out for some reason the registry key does not get removed even if
> Product A has been uninstalled. So I am not using Registry Search. The
> component is getting removed on uninstall. The file is removed and I did
> not find the Guid in registry after uninstall so ComponentSearch seems like
> better option for me I think as it will correctly exist only if Product A
> is currently installed. But yes given a choice it would be nice to use a
> RegistrySearch instead.
>
> Thanks
> Swat
>
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