$ErrorActionPreference = "Stop"

$Root = Split-Path -Parent (Split-Path -Parent $MyInvocation.MyCommand.Path)
Set-Location $Root

$Python = "python"
$Requirements = Join-Path $Root "requirements.txt"
$Wheelhouse = Join-Path $Root "vendor\wheels"

New-Item -ItemType Directory -Force -Path $Wheelhouse | Out-Null

Write-Host "[download] saving packages to $Wheelhouse"
& $Python -m pip download -r $Requirements -d $Wheelhouse