Set a temporary environment variable in PowerShell

set-envvar.ps1

#requires -version 5.1

#set a temporary environment variable
# example using the function alias and positional parameters: se rust_log debug
Function Set-EnvironmentVariable {
    [CmdletBinding(SupportsShouldProcess)]
    [alias("se")]
    Param (
        [Parameter(Position = 0, Mandatory)]
        [ValidateNotNullOrEmpty()]
        [string]$Name,
        [Parameter(Position = 1, Mandatory)]
        [object]$Value,
        [switch]$Passthru
    )

    $splat = @{
        Path     = (Join-Path -Path env: -ChildPath $name)
        Value    = $Value
        Passthru = $Passthru
        Force    = $true
    }
    Set-Item @splat
}