Change Wix Merge Module Package GUID?

Posted by jenglert on Stack Overflow See other posts from Stack Overflow or by jenglert
Published on 2010-02-04T17:19:22Z Indexed on 2010/05/01 21:37 UTC
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wix

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wix3

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windows-installer

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merge-module

When is it necessary to change the package GUID of a merge module?

<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
 <Module Id="MyMergeModule" Language="1003" Version="1.0.0.0">
  <Package Id="SOME_GUID" Manufacturer="Me" InstallerVersion="301" />
 </Module>
</Wix>

Wix3 requires that the package GUID is explicitly specified for a merge module unlike for a product. My merge module will be used with an MSI that is built bi-weekly. These bi-weekly MSIs need to co-exist on the same machine as separate installations (e.g. versions 1, 2, 3, etc...) Do I need to change the package GUID of my merge module for each bi-weekly MSI build?

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