I know the rule is that Components should always have unique GUIDs (at least, I
think that's the rule).
However, I have two packages that sometimes refer to and may install the same
files in the same location, so should the GUID be the same for both, so the
Windows Installer knows it's supposed to be the same, and if it already exists,
it shouldn't be installed a second time (unless the version number is higher,
but I don't think that applies for us)?
For example, if both packages' WiX source have the markup below, and MyFile.bat
is the exact same file in both cases, should the two Packages use the same
GUID, or different ones?
<Directory Id='ProgramFilesFolder' Name='PFiles'>
<Directory Id='INSTALLDIR' Name='MyOrg'>
<Directory Id='dirInstClient' Name='MyClient'>
<Component Id='compMyFile' Guid='MyGUID'>
<File Id='fileMyFile' Name='MyFile.bat' DiskId='1'
Source='path/to/MyFile..bat' KeyPath='yes' />
</Component>
</Directory>
</Directory>
</Directory>
The rule says no, but what I understand about Components and GUIDs says yes
(see http://robmensching.com/blog/posts/2003/10/18/component-rules-101).
What do you say?
Thanks,
Alain
***************************************
Alain Forget, Ph.D.
Postdoctoral Researcher
CyLab, Carnegie Mellon University
afor...@cmu.edu
http://cups.cs.cmu.edu/~aforget/
***************************************
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