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<#!
.SYNOPSIS
Creates a virtual environment for a CI machine.
.DESCRIPTION
If the virtual environment directory already exists, it will skip the creation. The location of the virtual environment will be stored in a variable
named <VenvName>_LOCATION. The location will be RepoRoot + VenvName.
.PARAMETER VenvName
The name of the virtual environment which will be created.
.PARAMETER RepoRoot
The root of the repository.
#>
param(
[Parameter(Mandatory = $true)]
[string] $VenvName,
# The root of the repository should be $(Build.SourcesDirectory) passed in from template
[Parameter(Mandatory = $true)]
[string] $RepoRoot
)
$venvPath = Join-Path $RepoRoot $VenvName
if (!(Test-Path $venvPath)) {
$invokingPython = (Get-Command "python").Source
Write-Host "Creating virtual environment '$VenvName' using python located at '$invokingPython'."
python -m pip install virtualenv==20.25.1
python -m virtualenv "$venvPath"
$pythonVersion = python --version
Write-Host "Virtual environment '$VenvName' created at directory path '$venvPath' utilizing python version $pythonVersion."
Write-Host "##vso[task.setvariable variable=$($VenvName)_LOCATION]$venvPath"
Write-Host "##vso[task.setvariable variable=$($VenvName)_ACTIVATION_SCRIPT]if(`$IsWindows){. $venvPath/Scripts/Activate.ps1;}else {. $venvPath/bin/activate.ps1}"
}
else {
Write-Host "Virtual environment '$VenvName' already exists. Skipping creation."
}
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