I have successfully created a multi-instance installer where each
instance can be independently upgraded (unique product/upgrade code per
instance, components all isolated). Now I want to be able to patch them
(a MSI upgrade functions, but I need a MSP for LUA patching).
I've tried the PatchCreation method described in
http://wix.sourceforge.net/manual-wix3/patch_building.htm, but that only
creates a patch for the default instance. I then was looking at
http://wix.sourceforge.net/manual-wix3/wix_patching.htm but it seems
that either pyro or torch is also not multi-instance aware. After some
more digging I've found some vague references to a workaround here:
http://ysdevlog.blogspot.com/2008/12/multiple-instance-installations-and
.html but I would prefer to change the toolset to make it support this.
I would assume torch would have to be modified to dump out instance
information to a Wix table, and then pyro would need to duplicate its
transforms applying the fix-ups as defined in the workaround.
Am I way off base on this? Would this feature be helpful?
Thanks,
Jacob
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