Okay, found the answer. It appears all of the mentioned WiX versions support at least InstallerVersion="200"
in the <Package />
element. To quote the relevant part of the above documentation page:
The minimum version of the Windows Installer required to install this package. Take the major version of the required Windows Installer and multiply by a 100 then add the minor version of the Windows Installer. For example, "200" would represent Windows Installer 2.0 and "405" would represent Windows Installer 4.5. For 64-bit Windows Installer packages, this property is set to 200 by default as Windows Installer 2.0 was the first version to support 64-bit packages.
According to the Wikipedia article linked in the question this version of Windows Installer (i.e. 2.0) was included with:
- Windows XP RTM, SP1
- Windows 2000 SP3, SP4
- Windows Server 2003 RTM
and is available for:
- Windows 95/98/Me
- Windows NT 4.0 SP6
- Windows 2000 RTM, SP1, SP2
So in conclusion we can say that the minimum supported version of Windows Installer for a WiX-authored setup is: 2.0 (== InstallerVersion="200"
).