[wpkg-users] Check type uninstall

[Marco Schmidt]

 From my experience this is usually the case on a 64bit Windows, where 
one uninstall is in the 64bit part of the registry and one is in the 
32bit part (WOW6432node).

And it happens, by a change from 32bit to 64bit installer of the software.

Greetings ...
  Marco

On 3/15/21 7:18 AM, Ulli Conrad wrote:
> Hi all,
> 
> just recognized that the check for an uninstall entry returns false if 
> an older version is installed parallel even if an entry for the newly 
> installed version is present.
> 
> I assume that WPKG scans the uninstall entries and stops on the first 
> occurrence, compares the version string and returns false if it is not 
> matching instead of looking for further occurrences matching properly.
> 
> Is this intended?
> 
> For instance my Blender package. Installs well, check performs properly 
> as long as no older Blender version(s) (e.g. 2.91.2) is/are already 
> installed.
> 
> <?xml version="1.0" encoding="UTF-8"?>
> 
> <packages:packages xmlns:packages="http://www.wpkg.org/packages"
>      xmlns:wpkg="http://www.wpkg.org/wpkg" 
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>      xsi:schemaLocation="http://www.wpkg.org/packages ../xsd/packages.xsd">
> 
>    <!-- Blender -->
>    <package id="blender" name="Blender" revision="%version%" 
> reboot="false" priority="100">
>      <variable name="version" value="2.92.0" />
> 
>      <check type="uninstall" condition="versiongreaterorequal" 
> path="Blender" value="%version%" />
> 
> 
>      <install cmd="msiexec /qn /i 
> "%SOFTWARE%\blender\blender-%version%-windows64.msi" 
> ALLUSERS=1" />
> 
>      <upgrade include="install" />
> 
>      <remove cmd="msiexec /qn /x {D6E38255-FB12-4724-A6FF-075B43272C66}" />
> 
>    </package>
> 
> 
> </packages:packages>
> 
> Thank you
> 
> - Ulli -
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