Define $IsWindows if not defined. (IDFGH-6181) #7858
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The
$IsWindows
PowerShell variable was added in PowerShell Core 6 andPowerShell 7, and is not present in earlier PowerShell versions. Set to
true if undefined. This fixes #7820.
The first version to run on non-Windows platforms was PowerShell Core
6.01 which means that IsWindows is guaranteed to be defined on all
non-Windows systems. So, if undefined this indicates a Windows platform.
Footnotes
https://docs.microsoft.com/en-us/powershell/scripting/install/powershell-support-lifecycle?view=powershell-7.2#release-history ↩