Hello,
I am trying to use Wix to make a installer for the following scenario: my
application has 3 critical components: foo, bar and baz. Foo is created on
demand when a user clicks the download link. Bar and baz remain unchanged
and they both depend on foo. They are also quite large and I want the
installer to be as small as possible when users download it. I was thinking
the installer needs to contain only foo and download bar and baz from my web
site during install (like a web installer does), while showing download
progress. Question is: what is the best way do this with Wix?
I have thought of several ways, each with their issues:
1. run a custom action after InstallInitialize which downloads the missing
components to some temp location and copies them to install location.
Issues:
- the missing files are not included in the database so they will not be
removed on uninstall. One way to fix this is to include 0-bytes bar and baz
which get installed by msi and then overwrite them with the downloaded ones.
However what will be downloaded will be a zip and the custom action needs to
also unpack it. I feel this is something the msi was supposed to do...
- cost will not be accurate. I don't suppose I could just update the
file table?
2. create a minor upgrade msp which contains just bar and baz, which will be
downloaded instead. Issues:
- adding missing components is not exactly a minor upgrade
- can't use the msp during deferred installation. My best shot would
probably be to run msiexec with /patch arg which means this is not the job
of the installer anymore, it's the bootstrapper's. I don't know if can use
setupbld.exe to specify how to run the msi.
Any help on this will be highly appreciated. Thanks!
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