$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $PSScriptRoot
$WheelDir = Join-Path $Root "vendor\wheels"
$Req = Join-Path $Root "requirements.txt"
New-Item -ItemType Directory -Force -Path $WheelDir | Out-Null
python -m pip download -r $Req -d $WheelDir
Write-Host "依赖包已下载到 $WheelDir"