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# Installs the Rust toolchain via rustup.
# Run this before any platform-specific setup script.
$ErrorActionPreference = "Stop"
if (Get-Command cargo -ErrorAction SilentlyContinue) {
Write-Output "rustup already installed: $(rustup --version)"
exit 0
}
$cargoHome = if ($env:CARGO_HOME) { $env:CARGO_HOME } else { "$env:USERPROFILE\.cargo" }
$rustupExe = "$cargoHome\bin\rustup.exe"
if (-not (Test-Path $rustupExe)) {
Write-Output "Installing rustup..."
$installer = "$env:TEMP\rustup-init.exe"
Invoke-WebRequest -Uri "https://static.rust-lang.org/rustup/dist/x86_64-pc-windows-msvc/rustup-init.exe" -OutFile $installer
& $installer -y --default-toolchain stable
Remove-Item -Force $installer
}
$env:PATH = "$cargoHome\bin;$env:PATH"
Write-Output "Rust installed: $(& rustc --version)"
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