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Leon Yu
0f4a41a4ec
PowerShell on Windows comes with both 2.0 and 3.0+ installed. This is a feature inherited from .NET -- PowerShell 2.0 is based on .NET 2.0 which is installed side-by-side with .NET 3.0-4.7. It is possible to run PowerShell 2.0 by invoking the command powershell.exe -Version 2.0 -NoProfile.
This is a fairly useful feature for PowerShell scripters, as one can use PowerShell 2.0 to check for the basic compatibility of scripts without having to run a VM. As such, a user can have scoop apps installed via PowerShell 3.0+, and then launch PowerShell 2.0 for casual testing.
Currently the scoop shims are broken in PowerShell 2.0, as they use $PSScriptRoot. In addition, since PowerShell picks up {command}.ps1 before {command}.exe when looking for {command}, this makes using scoop-installed app difficult in PowerShell 2.0.
While Scoop command itself doesn't support PowerShell 2.0, and there is no point in doing so, it is fairly easy to make the shims support PowerShell 2.0, so this is what this patch does.