In one of my last blog posts
(http://blogs.msdn.com/jrock/archive/2008/02/13/changing-the-file-extension-
of-wix-extensions-from-dll-to-wixext.aspx) I wrote about how we would be
changing the file extension of WiX extensions from .dll to .wixext. Well, it
turns out that we won't be doing it for technical reasons.
A WiX extension is really just a .NET assembly with an embedded XSD and
wixlib. While it's technically possible to rename a managed assembly from
.dll to .wixext, it will add a limitation that we didn't want to enforce. If
WixExtensionA.wixext had a runtime reference to WixExtensionB.wixext, then
the runtime cannot find the file if it doesn't end in a .dll. I personally
think that's a limitation that the .NET Framework did not need to impose,
but I also do not know all of the details. I'm sure there was a good reason
to impose that limitation. We also had some problems with Visual Studio not
letting us add project references to other WixExtensions that didn't end in
a .dll.
As a result, we will not be doing this change and the current behavior will
remain.
Here's the full blog post:
http://blogs.msdn.com/jrock/archive/2008/03/03/changing-the-file-extension-o
f-wix-extensions-from-dll-to-wixext-revisited.aspx
Thanks,
Justin
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