[wix-users] How can I conditionally overwrite DLLs during WIX installation of different packages?

[Christopher Painter]

What language is your application written?  Are the DLL's "registered"?   Does your language have some form of  late binding?

The only tolerable way I can see out of this sticky mess would be something like:

1) Install these shared dll's to a folder structure that allows all of them to be installed side by side in unique subfolders.  This is because they don't follow the component rules and are really distinct components.   Any MSI containing the shared components would follow standard default file versioning and component rules for each DLL but because there are distinct components the latest version of each flavor of the DLL would be available in it's own unique folder and or file name.

2) Shift the business logic of which of these DLLs to load to the application runtime.  For example in .NET you could use some dependency injection to decide that DLL A is the one to be loaded.

3) The components should all get uninstalled when the last MSI is uninstalled because all component rules / reference counting are being followed.



________________________________
From: wix-users <wix-users-bounces at lists.wixtoolset.org> on behalf of Walter Dexter via wix-users <wix-users at lists.wixtoolset.org>
Sent: Friday, February 1, 2019 12:11 PM
To: WiX Toolset Users Mailing List
Cc: Walter Dexter
Subject: Re: [wix-users] How can I conditionally overwrite DLLs during WIX installation of different packages?

So, if it’s at version 2, install version 4, but if it’s at 3, install 5,
just for example?

I completely agree it’s madness, but I’d think you could achieve it with
some combination of properties driven by a FileSearch and components
controlled by conditions. Haven’t tried it though.

It’s only going to get worse if you go down this path, you’re going to wind
up with a mess in another couple generations of releases.

On Thu, Jan 31, 2019 at 4:15 AM Sebastian, ChinchuX via wix-users <
wix-users at lists.wixtoolset.org> wrote:

> 1.     Hi All,
> 2.       Could you please help me to find a way for conditionally
> overwrites a DLL depending up on the version of it .
> 3.       Create a dummy dll with different version number. Build the that
> dlls with different Wix installation packages.
> 4.       Check for upgrade of dlls with multiple installers.
> 5.       Make sure that dll gets uninstalled when the last tool is
> uninstalled.
> Thanks & Regards,
> Chinchu
>
>
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