I don't know if it's possible to produce exactly the same MSI, but I think
your problem is related to automatically generated package codes or
product codes. If you want to be able to rebuild an MSI that acts exactly
the same as one that already went out the door (I think this is generally
a bad idea and that you should save every MSI that you release somewhere
'special' rather than relying on being able to rebuild them), you need to
force all the "autogenerated" IDs to be identical from one build to the
next. The only way to do this is to fully specify all those IDs
(packagecode productcode upgradecode, etc.) and then make sure you update
them when appropriate (when building a "new" version of the MSI).
Kelly
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11/26/2007 11:59 AM
Please respond to
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Subject
[WiX-users] Recreating duplicate .msi from revision control system
We are using WIX 2.xx tools for a project which is kept under revision
control. I'm trying to validate that I can reproduce an exact version of
our software including the MSI distributable for historical purposes.
However, I find that if I produce an MSI file twice using the same .WXS
input files the resulting MSI is slightly different.
At first I did not think it would be an issue, a binary diff shows only
about 30 bytes are different and I expected it was a time stamp or some
other trivial detail. However, if I install with the first MSI, delete
the MSI, recompile the MSI, and run the same MSI it complains that the
product of a different version is already installed and must be removed
from add/remove programs.
I know I could use vomus mode to override this, but if I run the same MSI
I installed with originally it automatically asks to uninstall which is
the behaviour I'm looking for.
Is it possible to reproduce the exact same MSI twice so long as all the
inputs are unmodified?
Thanks in advance,
Jason Riffel
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