mirror of
https://github.com/unslothai/unsloth
synced 2026-04-21 13:37:39 +00:00
cae4a74297
Older installers persisted the venv Scripts directory directly in the User PATH registry. The shim approach (added in this PR) no longer writes that entry, but it also did not remove the old one. On upgrade, the legacy entry survived and python.exe / pip.exe from the unsloth venv continued winning resolution in every new shell, which is exactly the hijack the shim was designed to prevent. Before creating the shim, read the current User PATH, filter out any entry matching $VenvDir\Scripts (using the same symmetric raw+expanded comparison as Add-ToUserPath), and write back if changed. This runs once per install and is a no-op on fresh installs where the legacy entry was never written.
1128 lines
52 KiB
PowerShell
1128 lines
52 KiB
PowerShell
# Unsloth Studio Installer for Windows PowerShell
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# Usage: irm https://raw.githubusercontent.com/unslothai/unsloth/main/install.ps1 | iex
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# Local: Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass; .\install.ps1 --local
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# NoTorch: .\install.ps1 --no-torch (skip PyTorch, GGUF-only mode)
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# Test: .\install.ps1 --package roland-sloth
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function Install-UnslothStudio {
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$ErrorActionPreference = "Stop"
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$script:UnslothVerbose = ($env:UNSLOTH_VERBOSE -eq "1")
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# ── Parse flags ──
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$StudioLocalInstall = $false
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$PackageName = "unsloth"
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$RepoRoot = ""
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$SkipTorch = $false
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$argList = $args
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for ($i = 0; $i -lt $argList.Count; $i++) {
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switch ($argList[$i]) {
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"--local" { $StudioLocalInstall = $true }
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"--no-torch" { $SkipTorch = $true }
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"--verbose" { $script:UnslothVerbose = $true }
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"-v" { $script:UnslothVerbose = $true }
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"--package" {
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$i++
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if ($i -ge $argList.Count) {
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Write-Host "[ERROR] --package requires an argument." -ForegroundColor Red
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return
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}
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$PackageName = $argList[$i]
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}
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}
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}
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# Propagate to child processes so they also respect verbose mode.
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# Process-scoped -- does not persist.
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if ($script:UnslothVerbose) {
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$env:UNSLOTH_VERBOSE = '1'
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}
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if ($StudioLocalInstall) {
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$RepoRoot = (Resolve-Path (Split-Path -Parent $PSCommandPath)).Path
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if (-not (Test-Path (Join-Path $RepoRoot "pyproject.toml"))) {
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Write-Host "[ERROR] --local must be run from the unsloth repo root (pyproject.toml not found at $RepoRoot)" -ForegroundColor Red
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return
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}
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}
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$PythonVersion = "3.13"
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$StudioHome = Join-Path $env:USERPROFILE ".unsloth\studio"
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$VenvDir = Join-Path $StudioHome "unsloth_studio"
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$Rule = [string]::new([char]0x2500, 52)
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$Sloth = [char]::ConvertFromUtf32(0x1F9A5)
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function Enable-StudioVirtualTerminal {
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if ($env:NO_COLOR) { return $false }
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try {
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if (-not ("StudioVT.Native" -as [type])) {
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Add-Type -Namespace StudioVT -Name Native -MemberDefinition @'
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[DllImport("kernel32.dll")] public static extern IntPtr GetStdHandle(int nStdHandle);
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[DllImport("kernel32.dll")] public static extern bool GetConsoleMode(IntPtr h, out uint m);
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[DllImport("kernel32.dll")] public static extern bool SetConsoleMode(IntPtr h, uint m);
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'@ -ErrorAction Stop
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}
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$h = [StudioVT.Native]::GetStdHandle(-11)
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[uint32]$mode = 0
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if (-not [StudioVT.Native]::GetConsoleMode($h, [ref]$mode)) { return $false }
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$mode = $mode -bor 0x0004
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return [StudioVT.Native]::SetConsoleMode($h, $mode)
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} catch {
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return $false
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}
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}
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$script:StudioVtOk = Enable-StudioVirtualTerminal
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function Get-StudioAnsi {
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param(
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[Parameter(Mandatory = $true)]
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[ValidateSet('Title', 'Dim', 'Ok', 'Warn', 'Err', 'Reset')]
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[string]$Kind
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)
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$e = [char]27
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switch ($Kind) {
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'Title' { return "${e}[38;5;150m" }
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'Dim' { return "${e}[38;5;245m" }
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'Ok' { return "${e}[38;5;108m" }
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'Warn' { return "${e}[38;5;136m" }
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'Err' { return "${e}[91m" }
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'Reset' { return "${e}[0m" }
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}
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}
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Write-Host ""
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if ($script:StudioVtOk -and -not $env:NO_COLOR) {
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Write-Host (" " + (Get-StudioAnsi Title) + $Sloth + " Unsloth Studio Installer (Windows)" + (Get-StudioAnsi Reset))
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Write-Host (" {0}{1}{2}" -f (Get-StudioAnsi Dim), $Rule, (Get-StudioAnsi Reset))
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} else {
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Write-Host (" {0} Unsloth Studio Installer (Windows)" -f $Sloth) -ForegroundColor DarkGreen
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Write-Host " $Rule" -ForegroundColor DarkGray
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}
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Write-Host ""
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# ── Helper: refresh PATH from registry (deduplicating entries) ──
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# Merge order: venv Scripts (if active) > Machine > User > current $env:Path.
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# Dedup compares both raw and expanded forms (%VAR% vs literal).
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function Refresh-SessionPath {
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$machine = [System.Environment]::GetEnvironmentVariable("Path", "Machine")
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$user = [System.Environment]::GetEnvironmentVariable("Path", "User")
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$venvScripts = if ($env:VIRTUAL_ENV) { Join-Path $env:VIRTUAL_ENV "Scripts" } else { $null }
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$sources = @()
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if ($venvScripts) { $sources += $venvScripts }
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$sources += @($machine, $user, $env:Path)
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$merged = ($sources | Where-Object { $_ }) -join ";"
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$seen = @{}
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$unique = New-Object System.Collections.Generic.List[string]
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foreach ($p in $merged -split ";") {
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$rawKey = $p.Trim().Trim('"').TrimEnd("\").ToLowerInvariant()
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$expKey = [Environment]::ExpandEnvironmentVariables($p).Trim().Trim('"').TrimEnd("\").ToLowerInvariant()
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if ($rawKey -and -not $seen.ContainsKey($rawKey) -and -not $seen.ContainsKey($expKey)) {
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$seen[$rawKey] = $true
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if ($expKey -and $expKey -ne $rawKey) { $seen[$expKey] = $true }
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$unique.Add($p)
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}
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}
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$env:Path = $unique -join ";"
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}
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# ── Helper: safely add a directory to the persistent User PATH ──
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# Direct registry access preserves REG_EXPAND_SZ (avoids dotnet/runtime#1442).
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# Append (default) keeps existing tools first; Prepend for must-win entries.
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function Add-ToUserPath {
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param(
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[Parameter(Mandatory = $true)][string]$Directory,
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[ValidateSet('Append','Prepend')]
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[string]$Position = 'Append'
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)
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try {
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$regKey = [Microsoft.Win32.Registry]::CurrentUser.CreateSubKey('Environment')
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try {
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$rawPath = $regKey.GetValue('Path', '', [Microsoft.Win32.RegistryValueOptions]::DoNotExpandEnvironmentNames)
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[string[]]$entries = if ($rawPath) { $rawPath -split ';' } else { @() } # string[] prevents scalar collapse
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$normalDir = $Directory.Trim().Trim('"').TrimEnd('\').ToLowerInvariant()
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$expNormalDir = [Environment]::ExpandEnvironmentVariables($Directory).Trim().Trim('"').TrimEnd('\').ToLowerInvariant()
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$kept = New-Object System.Collections.Generic.List[string]
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$matchIndices = New-Object System.Collections.Generic.List[int]
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for ($i = 0; $i -lt $entries.Count; $i++) {
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$stripped = $entries[$i].Trim().Trim('"')
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$rawNorm = $stripped.TrimEnd('\').ToLowerInvariant()
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$expNorm = [Environment]::ExpandEnvironmentVariables($stripped).TrimEnd('\').ToLowerInvariant()
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$isMatch = ($rawNorm -and ($rawNorm -eq $normalDir -or $rawNorm -eq $expNormalDir)) -or
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($expNorm -and ($expNorm -eq $normalDir -or $expNorm -eq $expNormalDir))
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if ($isMatch) {
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$matchIndices.Add($i)
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continue
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}
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$kept.Add($entries[$i])
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}
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$alreadyPresent = $matchIndices.Count -gt 0
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if ($alreadyPresent -and $Position -eq 'Append') { # Append: idempotent no-op
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return $false
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}
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if ($alreadyPresent -and $Position -eq 'Prepend' -and # Prepend: no-op if already at front
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$matchIndices.Count -eq 1 -and $matchIndices[0] -eq 0) {
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return $false
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}
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# One-time backup under HKCU\Software\Unsloth\PathBackup
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if ($rawPath) {
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try {
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$backupKey = [Microsoft.Win32.Registry]::CurrentUser.CreateSubKey('Software\Unsloth')
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try {
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$existingBackup = $backupKey.GetValue('PathBackup', $null)
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if (-not $existingBackup) {
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$backupKey.SetValue('PathBackup', $rawPath, [Microsoft.Win32.RegistryValueKind]::ExpandString)
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}
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} finally {
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$backupKey.Close()
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}
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} catch { }
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}
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if (-not $rawPath) {
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Write-Host "[WARN] User PATH is empty - initializing with $Directory" -ForegroundColor Yellow
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}
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$newPath = if ($rawPath) {
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if ($Position -eq 'Prepend') {
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(@($Directory) + $kept) -join ';'
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} else {
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($kept + @($Directory)) -join ';'
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}
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} else {
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$Directory
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}
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if ($newPath -ceq $rawPath) { # no actual change
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return $false
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}
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$regKey.SetValue('Path', $newPath, [Microsoft.Win32.RegistryValueKind]::ExpandString)
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# Broadcast WM_SETTINGCHANGE via dummy env-var roundtrip.
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# [NullString]::Value avoids PS 7.5+/.NET 9 $null-to-"" coercion.
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try {
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$d = "UnslothPathRefresh_$([guid]::NewGuid().ToString('N').Substring(0,8))"
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[Environment]::SetEnvironmentVariable($d, '1', 'User')
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[Environment]::SetEnvironmentVariable($d, [NullString]::Value, 'User')
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} catch { }
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return $true
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} finally {
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$regKey.Close()
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}
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} catch {
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Write-Host "[WARN] Could not update User PATH: $($_.Exception.Message)" -ForegroundColor Yellow
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return $false
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}
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}
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function step {
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param(
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[Parameter(Mandatory = $true)][string]$Label,
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[Parameter(Mandatory = $true)][string]$Value,
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[string]$Color = "Green"
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)
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if ($script:StudioVtOk -and -not $env:NO_COLOR) {
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$dim = Get-StudioAnsi Dim
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$rst = Get-StudioAnsi Reset
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$val = switch ($Color) {
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'Green' { Get-StudioAnsi Ok }
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'Yellow' { Get-StudioAnsi Warn }
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'Red' { Get-StudioAnsi Err }
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'DarkGray' { Get-StudioAnsi Dim }
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default { Get-StudioAnsi Ok }
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}
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$padded = if ($Label.Length -ge 15) { $Label.Substring(0, 15) } else { $Label.PadRight(15) }
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Write-Host (" {0}{1}{2}{3}{4}{2}" -f $dim, $padded, $rst, $val, $Value)
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} else {
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$padded = if ($Label.Length -ge 15) { $Label.Substring(0, 15) } else { $Label.PadRight(15) }
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Write-Host (" {0}" -f $padded) -NoNewline -ForegroundColor DarkGray
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$fc = switch ($Color) {
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'Green' { 'DarkGreen' }
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'Yellow' { 'Yellow' }
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'Red' { 'Red' }
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'DarkGray' { 'DarkGray' }
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default { 'DarkGreen' }
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}
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Write-Host $Value -ForegroundColor $fc
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}
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}
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function substep {
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param(
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[Parameter(Mandatory = $true)][string]$Message,
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[string]$Color = "DarkGray"
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)
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if ($script:StudioVtOk -and -not $env:NO_COLOR) {
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$msgCol = switch ($Color) {
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'Yellow' { (Get-StudioAnsi Warn) }
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'Red' { (Get-StudioAnsi Err) }
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default { (Get-StudioAnsi Dim) }
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}
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$pad = "".PadRight(15)
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Write-Host (" {0}{1}{2}{3}" -f $msgCol, $pad, $Message, (Get-StudioAnsi Reset))
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} else {
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$fc = switch ($Color) {
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'Yellow' { 'Yellow' }
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'Red' { 'Red' }
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default { 'DarkGray' }
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}
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Write-Host (" {0,-15}{1}" -f "", $Message) -ForegroundColor $fc
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}
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}
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# Run native commands quietly by default to match install.sh behavior.
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# Full command output is shown only when --verbose / UNSLOTH_VERBOSE=1.
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function Invoke-InstallCommand {
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param(
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[Parameter(Mandatory = $true)][ScriptBlock]$Command
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)
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$prevEap = $ErrorActionPreference
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$ErrorActionPreference = "Continue"
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try {
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# Reset to avoid stale values from prior native commands.
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$global:LASTEXITCODE = 0
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if ($script:UnslothVerbose) {
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# Merge stderr into stdout so progress/warning output stays visible
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# without flipping $? on successful native commands (PS 5.1 treats
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# stderr records as errors that set $? = $false even on exit code 0).
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& $Command 2>&1 | Out-Host
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} else {
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$output = & $Command 2>&1 | Out-String
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if ($LASTEXITCODE -ne 0) {
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Write-Host $output -ForegroundColor Red
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}
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}
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return [int]$LASTEXITCODE
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} finally {
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$ErrorActionPreference = $prevEap
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}
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}
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function New-StudioShortcuts {
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param(
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[Parameter(Mandatory = $true)][string]$UnslothExePath
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)
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if (-not (Test-Path $UnslothExePath)) {
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substep "cannot create shortcuts, unsloth.exe not found at $UnslothExePath" "Yellow"
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return
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}
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try {
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# Persist an absolute path in launcher scripts so shortcut working
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# directory changes do not break process startup.
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$UnslothExePath = (Resolve-Path $UnslothExePath).Path
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# Escape for single-quoted embedding in generated launcher script.
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# This prevents runtime variable expansion for paths containing '$'.
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$SingleQuotedExePath = $UnslothExePath -replace "'", "''"
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$localAppDataDir = $env:LOCALAPPDATA
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if (-not $localAppDataDir -or [string]::IsNullOrWhiteSpace($localAppDataDir)) {
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substep "LOCALAPPDATA path unavailable; skipped shortcut creation" "Yellow"
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return
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}
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$appDir = Join-Path $localAppDataDir "Unsloth Studio"
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$launcherPs1 = Join-Path $appDir "launch-studio.ps1"
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$launcherVbs = Join-Path $appDir "launch-studio.vbs"
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$desktopDir = [Environment]::GetFolderPath("Desktop")
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$desktopLink = if ($desktopDir -and $desktopDir.Trim()) {
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Join-Path $desktopDir "Unsloth Studio.lnk"
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} else {
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$null
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}
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$startMenuDir = if ($env:APPDATA -and $env:APPDATA.Trim()) {
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Join-Path $env:APPDATA "Microsoft\Windows\Start Menu\Programs"
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} else {
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$null
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}
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$startMenuLink = if ($startMenuDir -and $startMenuDir.Trim()) {
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Join-Path $startMenuDir "Unsloth Studio.lnk"
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} else {
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$null
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}
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if (-not $desktopLink) {
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substep "Desktop path unavailable; skipped desktop shortcut creation" "Yellow"
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}
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if (-not $startMenuLink) {
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substep "APPDATA/Start Menu path unavailable; skipped Start menu shortcut creation" "Yellow"
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}
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$iconPath = Join-Path $appDir "unsloth.ico"
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$bundledIcon = $null
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if ($PSScriptRoot -and $PSScriptRoot.Trim()) {
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$bundledIcon = Join-Path $PSScriptRoot "studio\frontend\public\unsloth.ico"
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}
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$iconUrl = "https://raw.githubusercontent.com/unslothai/unsloth/main/studio/frontend/public/unsloth.ico"
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if (-not (Test-Path $appDir)) {
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New-Item -ItemType Directory -Path $appDir -Force | Out-Null
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}
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$launcherContent = @"
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`$ErrorActionPreference = 'Stop'
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`$basePort = 8888
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`$maxPortOffset = 20
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`$timeoutSec = 60
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`$pollIntervalMs = 1000
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function Test-StudioHealth {
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param([Parameter(Mandatory = `$true)][int]`$Port)
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try {
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`$url = "http://127.0.0.1:`$Port/api/health"
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`$resp = Invoke-RestMethod -Uri `$url -TimeoutSec 1 -Method Get
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return (`$resp -and `$resp.status -eq 'healthy' -and `$resp.service -eq 'Unsloth UI Backend')
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} catch {
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return `$false
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}
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}
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|
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function Get-CandidatePorts {
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# Fast path: only probe base port + currently listening ports in range.
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`$ports = @(`$basePort)
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try {
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`$maxPort = `$basePort + `$maxPortOffset
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`$listening = Get-NetTCPConnection -State Listen -ErrorAction Stop |
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Where-Object { `$_.LocalPort -ge `$basePort -and `$_.LocalPort -le `$maxPort } |
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Select-Object -ExpandProperty LocalPort
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`$ports = (@(`$basePort) + `$listening) | Sort-Object -Unique
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} catch {
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Write-Host "[DEBUG] Get-NetTCPConnection failed: `$(`$_.Exception.Message). Falling back to full port scan." -ForegroundColor DarkGray
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# Fallback when Get-NetTCPConnection is unavailable/restricted.
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for (`$offset = 1; `$offset -le `$maxPortOffset; `$offset++) {
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`$ports += (`$basePort + `$offset)
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}
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}
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return `$ports
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}
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|
|
function Find-HealthyStudioPort {
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foreach (`$candidate in (Get-CandidatePorts)) {
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if (Test-StudioHealth -Port `$candidate) {
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return `$candidate
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}
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}
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return `$null
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}
|
|
|
|
function Test-PortBusy {
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param([Parameter(Mandatory = `$true)][int]`$Port)
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`$listener = `$null
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|
try {
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`$listener = [System.Net.Sockets.TcpListener]::new([System.Net.IPAddress]::Any, `$Port)
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`$listener.Start()
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return `$false
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} catch {
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return `$true
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} finally {
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if (`$listener) { try { `$listener.Stop() } catch {} }
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}
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}
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|
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function Find-FreeLaunchPort {
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`$maxPort = `$basePort + `$maxPortOffset
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try {
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`$listening = Get-NetTCPConnection -State Listen -ErrorAction Stop |
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Where-Object { `$_.LocalPort -ge `$basePort -and `$_.LocalPort -le `$maxPort } |
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Select-Object -ExpandProperty LocalPort
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for (`$offset = 0; `$offset -le `$maxPortOffset; `$offset++) {
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`$candidate = `$basePort + `$offset
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if (`$candidate -notin `$listening) {
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return `$candidate
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}
|
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}
|
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} catch {
|
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# Get-NetTCPConnection unavailable or restricted; probe ports directly
|
|
for (`$offset = 0; `$offset -le `$maxPortOffset; `$offset++) {
|
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`$candidate = `$basePort + `$offset
|
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if (-not (Test-PortBusy -Port `$candidate)) {
|
|
return `$candidate
|
|
}
|
|
}
|
|
}
|
|
return `$null
|
|
}
|
|
|
|
# If Studio is already healthy on any expected port, just open it and exit.
|
|
`$existingPort = Find-HealthyStudioPort
|
|
if (`$existingPort) {
|
|
Start-Process "http://localhost:`$existingPort"
|
|
exit 0
|
|
}
|
|
|
|
`$launchMutex = [System.Threading.Mutex]::new(`$false, 'Local\UnslothStudioLauncher')
|
|
`$haveMutex = `$false
|
|
try {
|
|
try {
|
|
`$haveMutex = `$launchMutex.WaitOne(0)
|
|
} catch [System.Threading.AbandonedMutexException] {
|
|
`$haveMutex = `$true
|
|
}
|
|
if (-not `$haveMutex) {
|
|
# Another launcher is already running; wait for it to bring Studio up
|
|
`$deadline = (Get-Date).AddSeconds(`$timeoutSec)
|
|
while ((Get-Date) -lt `$deadline) {
|
|
`$port = Find-HealthyStudioPort
|
|
if (`$port) { Start-Process "http://localhost:`$port"; exit 0 }
|
|
Start-Sleep -Milliseconds `$pollIntervalMs
|
|
}
|
|
exit 0
|
|
}
|
|
|
|
`$powershellExe = Join-Path `$env:SystemRoot 'System32\WindowsPowerShell\v1.0\powershell.exe'
|
|
`$studioExe = '$SingleQuotedExePath'
|
|
`$launchPort = Find-FreeLaunchPort
|
|
if (-not `$launchPort) {
|
|
`$msg = "No free port found in range `$basePort-`$(`$basePort + `$maxPortOffset)"
|
|
try {
|
|
Add-Type -AssemblyName System.Windows.Forms -ErrorAction Stop
|
|
[System.Windows.Forms.MessageBox]::Show(`$msg, 'Unsloth Studio') | Out-Null
|
|
} catch {}
|
|
exit 1
|
|
}
|
|
`$studioCommand = '& "' + `$studioExe + '" studio -H 0.0.0.0 -p ' + `$launchPort
|
|
`$launchArgs = @(
|
|
'-NoExit',
|
|
'-NoProfile',
|
|
'-ExecutionPolicy',
|
|
'Bypass',
|
|
'-Command',
|
|
`$studioCommand
|
|
)
|
|
|
|
try {
|
|
`$proc = Start-Process -FilePath `$powershellExe -ArgumentList `$launchArgs -WorkingDirectory `$env:USERPROFILE -PassThru
|
|
} catch {
|
|
`$msg = "Could not launch Unsloth Studio terminal.`n`nError: `$(`$_.Exception.Message)"
|
|
try {
|
|
Add-Type -AssemblyName System.Windows.Forms -ErrorAction Stop
|
|
[System.Windows.Forms.MessageBox]::Show(`$msg, 'Unsloth Studio') | Out-Null
|
|
} catch {}
|
|
exit 1
|
|
}
|
|
|
|
`$browserOpened = `$false
|
|
`$deadline = (Get-Date).AddSeconds(`$timeoutSec)
|
|
while ((Get-Date) -lt `$deadline) {
|
|
`$healthyPort = Find-HealthyStudioPort
|
|
if (`$healthyPort) {
|
|
Start-Process "http://localhost:`$healthyPort"
|
|
`$browserOpened = `$true
|
|
break
|
|
}
|
|
if (`$proc.HasExited) { break }
|
|
Start-Sleep -Milliseconds `$pollIntervalMs
|
|
}
|
|
if (-not `$browserOpened) {
|
|
if (`$proc.HasExited) {
|
|
`$msg = "Unsloth Studio exited before becoming healthy. Check terminal output for errors."
|
|
} else {
|
|
`$msg = "Unsloth Studio is still starting but did not become healthy within `$timeoutSec seconds. Check the terminal window for the selected port and open it manually."
|
|
}
|
|
try {
|
|
Add-Type -AssemblyName System.Windows.Forms -ErrorAction Stop
|
|
[System.Windows.Forms.MessageBox]::Show(`$msg, 'Unsloth Studio') | Out-Null
|
|
} catch {}
|
|
}
|
|
} finally {
|
|
if (`$haveMutex) { `$launchMutex.ReleaseMutex() | Out-Null }
|
|
`$launchMutex.Dispose()
|
|
}
|
|
exit 0
|
|
"@
|
|
|
|
# Write UTF-8 with BOM for reliable decoding by Windows PowerShell 5.1,
|
|
# even when install.ps1 is executed from PowerShell 7.
|
|
$utf8Bom = New-Object System.Text.UTF8Encoding($true)
|
|
[System.IO.File]::WriteAllText($launcherPs1, $launcherContent, $utf8Bom)
|
|
$vbsContent = @"
|
|
Set shell = CreateObject("WScript.Shell")
|
|
cmd = "powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File ""$launcherPs1"""
|
|
shell.Run cmd, 0, False
|
|
"@
|
|
# WSH handles UTF-16LE reliably for .vbs files with non-ASCII paths.
|
|
Set-Content -Path $launcherVbs -Value $vbsContent -Encoding Unicode -Force
|
|
|
|
# Prefer bundled icon from local clone/dev installs.
|
|
# If not available, best-effort download from raw GitHub.
|
|
# We only attach the icon if the resulting file has a valid ICO header.
|
|
$hasValidIcon = $false
|
|
if ($bundledIcon -and (Test-Path $bundledIcon)) {
|
|
try {
|
|
Copy-Item -Path $bundledIcon -Destination $iconPath -Force
|
|
} catch {
|
|
Write-Host "[DEBUG] Error copying bundled icon: $($_.Exception.Message)" -ForegroundColor DarkGray
|
|
}
|
|
} elseif (-not (Test-Path $iconPath)) {
|
|
try {
|
|
Invoke-WebRequest -Uri $iconUrl -OutFile $iconPath -UseBasicParsing
|
|
} catch {
|
|
Write-Host "[DEBUG] Error downloading icon: $($_.Exception.Message)" -ForegroundColor DarkGray
|
|
}
|
|
}
|
|
|
|
if (Test-Path $iconPath) {
|
|
try {
|
|
$bytes = [System.IO.File]::ReadAllBytes($iconPath)
|
|
if (
|
|
$bytes.Length -ge 4 -and
|
|
$bytes[0] -eq 0 -and
|
|
$bytes[1] -eq 0 -and
|
|
$bytes[2] -eq 1 -and
|
|
$bytes[3] -eq 0
|
|
) {
|
|
$hasValidIcon = $true
|
|
} else {
|
|
Remove-Item $iconPath -Force -ErrorAction SilentlyContinue
|
|
}
|
|
} catch {
|
|
Write-Host "[DEBUG] Error validating or removing icon: $($_.Exception.Message)" -ForegroundColor DarkGray
|
|
Remove-Item $iconPath -Force -ErrorAction SilentlyContinue
|
|
}
|
|
}
|
|
|
|
$wscriptExe = Join-Path $env:SystemRoot "System32\wscript.exe"
|
|
$shortcutArgs = "//B //Nologo `"$launcherVbs`""
|
|
|
|
try {
|
|
$wshell = New-Object -ComObject WScript.Shell
|
|
$createdShortcutCount = 0
|
|
foreach ($linkPath in @($desktopLink, $startMenuLink)) {
|
|
if (-not $linkPath -or [string]::IsNullOrWhiteSpace($linkPath)) { continue }
|
|
try {
|
|
$shortcut = $wshell.CreateShortcut($linkPath)
|
|
$shortcut.TargetPath = $wscriptExe
|
|
$shortcut.Arguments = $shortcutArgs
|
|
$shortcut.WorkingDirectory = $appDir
|
|
$shortcut.Description = "Launch Unsloth Studio"
|
|
if ($hasValidIcon) {
|
|
$shortcut.IconLocation = "$iconPath,0"
|
|
}
|
|
$shortcut.Save()
|
|
$createdShortcutCount++
|
|
} catch {
|
|
substep "could not create shortcut at ${linkPath}: $($_.Exception.Message)" "Yellow"
|
|
}
|
|
}
|
|
if ($createdShortcutCount -gt 0) {
|
|
substep "Created Unsloth Studio shortcut"
|
|
} else {
|
|
substep "no Unsloth Studio shortcuts were created" "Yellow"
|
|
}
|
|
} catch {
|
|
substep "shortcut creation unavailable: $($_.Exception.Message)" "Yellow"
|
|
}
|
|
} catch {
|
|
substep "shortcut setup failed; skipping shortcuts: $($_.Exception.Message)" "Yellow"
|
|
}
|
|
}
|
|
|
|
# ── Check winget ──
|
|
if (-not (Get-Command winget -ErrorAction SilentlyContinue)) {
|
|
step "winget" "not available" "Red"
|
|
substep "Install it from https://aka.ms/getwinget" "Yellow"
|
|
substep "or install Python $PythonVersion and uv manually, then re-run." "Yellow"
|
|
return
|
|
}
|
|
|
|
# ── Helper: detect a working Python 3.11-3.13 on the system ──
|
|
# Returns the version string (e.g. "3.13") or "" if none found.
|
|
# Uses try-catch + stderr redirection so that App Execution Alias stubs
|
|
# (WindowsApps) and other non-functional executables are probed safely
|
|
# without triggering $ErrorActionPreference = "Stop".
|
|
#
|
|
# Skips Anaconda/Miniconda Python: conda-bundled CPython ships modified
|
|
# DLL search paths that break torch's c10.dll loading on Windows.
|
|
# Standalone CPython (python.org, winget, uv) does not have this issue.
|
|
#
|
|
# NOTE: A venv created from conda Python inherits conda's base_prefix
|
|
# even if the venv path does not contain "conda". We check both the
|
|
# executable path AND sys.base_prefix to catch this.
|
|
$script:CondaSkipPattern = '(?i)(conda|miniconda|anaconda|miniforge|mambaforge)'
|
|
|
|
function Test-IsCondaPython {
|
|
param([string]$Exe)
|
|
if ($Exe -match $script:CondaSkipPattern) { return $true }
|
|
try {
|
|
$basePrefix = (& $Exe -c "import sys; print(sys.base_prefix)" 2>$null | Out-String).Trim()
|
|
if ($basePrefix -match $script:CondaSkipPattern) { return $true }
|
|
} catch { }
|
|
return $false
|
|
}
|
|
|
|
# Returns @{ Version = "3.13"; Path = "C:\...\python.exe" } or $null.
|
|
# The resolved Path is passed to `uv venv --python` to prevent uv from
|
|
# re-resolving the version string back to a conda interpreter.
|
|
function Find-CompatiblePython {
|
|
# Try the Python Launcher first (most reliable on Windows)
|
|
# py.exe resolves to the standard CPython install, not conda.
|
|
$pyLauncher = Get-Command py -CommandType Application -ErrorAction SilentlyContinue
|
|
if ($pyLauncher -and $pyLauncher.Source -notmatch $script:CondaSkipPattern) {
|
|
foreach ($minor in @("3.13", "3.12", "3.11")) {
|
|
try {
|
|
$out = & $pyLauncher.Source "-$minor" --version 2>&1 | Out-String
|
|
if ($out -match "Python (3\.1[1-3])\.\d+") {
|
|
$ver = $Matches[1]
|
|
# Resolve the actual executable path and verify it is not conda-based
|
|
$resolvedExe = (& $pyLauncher.Source "-$minor" -c "import sys; print(sys.executable)" 2>$null | Out-String).Trim()
|
|
if ($resolvedExe -and (Test-Path $resolvedExe) -and -not (Test-IsCondaPython $resolvedExe)) {
|
|
return @{ Version = $ver; Path = $resolvedExe }
|
|
}
|
|
}
|
|
} catch {}
|
|
}
|
|
}
|
|
# Try python3 / python via Get-Command -All to look past stubs that
|
|
# might shadow a real Python further down PATH.
|
|
# Skip WindowsApps entries: the App Execution Alias stubs live there
|
|
# and can open the Microsoft Store as a side effect. Legitimate Store
|
|
# Python is already detected via the py launcher above (Store packages
|
|
# include py since Python 3.11).
|
|
# Skip Anaconda/Miniconda: check both path and sys.base_prefix.
|
|
foreach ($name in @("python3", "python")) {
|
|
foreach ($cmd in @(Get-Command $name -All -ErrorAction SilentlyContinue)) {
|
|
if (-not $cmd.Source) { continue }
|
|
if ($cmd.Source -like "*\WindowsApps\*") { continue }
|
|
if (Test-IsCondaPython $cmd.Source) { continue }
|
|
try {
|
|
$out = & $cmd.Source --version 2>&1 | Out-String
|
|
if ($out -match "Python (3\.1[1-3])\.\d+") {
|
|
return @{ Version = $Matches[1]; Path = $cmd.Source }
|
|
}
|
|
} catch {}
|
|
}
|
|
}
|
|
return $null
|
|
}
|
|
|
|
# ── Install Python if no compatible version (3.11-3.13) found ──
|
|
# Find-CompatiblePython returns @{ Version = "3.13"; Path = "C:\...\python.exe" } or $null.
|
|
$DetectedPython = Find-CompatiblePython
|
|
if ($DetectedPython) {
|
|
step "python" "Python $($DetectedPython.Version) already installed"
|
|
}
|
|
if (-not $DetectedPython) {
|
|
substep "installing Python ${PythonVersion}..."
|
|
$pythonPackageId = "Python.Python.$PythonVersion"
|
|
# Temporarily lower ErrorActionPreference so that winget stderr
|
|
# (progress bars, warnings) does not become a terminating error
|
|
# on PowerShell 5.1 where native-command stderr is ErrorRecord.
|
|
$prevEAP = $ErrorActionPreference
|
|
$ErrorActionPreference = "Continue"
|
|
try {
|
|
winget install -e --id $pythonPackageId --accept-package-agreements --accept-source-agreements
|
|
$wingetExit = $LASTEXITCODE
|
|
} catch { $wingetExit = 1 }
|
|
$ErrorActionPreference = $prevEAP
|
|
Refresh-SessionPath
|
|
|
|
# Re-detect after install (PATH may have changed)
|
|
$DetectedPython = Find-CompatiblePython
|
|
|
|
if (-not $DetectedPython) {
|
|
# Python still not functional after winget -- force reinstall.
|
|
# This handles both real failures AND "already installed" codes where
|
|
# winget thinks Python is present but it's not actually on PATH
|
|
# (e.g. user partially uninstalled, or installed via a different method).
|
|
substep "Python not found on PATH after winget. Retrying with --force..." "Yellow"
|
|
$ErrorActionPreference = "Continue"
|
|
try {
|
|
winget install -e --id $pythonPackageId --accept-package-agreements --accept-source-agreements --force
|
|
$wingetExit = $LASTEXITCODE
|
|
} catch { $wingetExit = 1 }
|
|
$ErrorActionPreference = $prevEAP
|
|
Refresh-SessionPath
|
|
$DetectedPython = Find-CompatiblePython
|
|
}
|
|
|
|
if (-not $DetectedPython) {
|
|
Write-Host "[ERROR] Python installation failed (exit code $wingetExit)" -ForegroundColor Red
|
|
Write-Host " Please install Python $PythonVersion manually from https://www.python.org/downloads/" -ForegroundColor Yellow
|
|
Write-Host " Make sure to check 'Add Python to PATH' during installation." -ForegroundColor Yellow
|
|
Write-Host " Then re-run this installer." -ForegroundColor Yellow
|
|
return
|
|
}
|
|
}
|
|
|
|
# ── Install uv if not present ──
|
|
if (-not (Get-Command uv -ErrorAction SilentlyContinue)) {
|
|
substep "installing uv package manager..."
|
|
$prevEAP = $ErrorActionPreference
|
|
$ErrorActionPreference = "Continue"
|
|
try { winget install --id=astral-sh.uv -e --accept-package-agreements --accept-source-agreements } catch {}
|
|
$ErrorActionPreference = $prevEAP
|
|
Refresh-SessionPath
|
|
# Fallback: if winget didn't put uv on PATH, try the PowerShell installer
|
|
if (-not (Get-Command uv -ErrorAction SilentlyContinue)) {
|
|
substep "trying alternative uv installer..." "Yellow"
|
|
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
|
|
Refresh-SessionPath
|
|
}
|
|
}
|
|
|
|
if (-not (Get-Command uv -ErrorAction SilentlyContinue)) {
|
|
step "uv" "could not be installed" "Red"
|
|
substep "Install it from https://docs.astral.sh/uv/" "Yellow"
|
|
return
|
|
}
|
|
|
|
# ── Create venv (migrate old layout if possible, otherwise fresh) ──
|
|
# Pass the resolved executable path to uv so it does not re-resolve
|
|
# a version string back to a conda interpreter.
|
|
if (-not (Test-Path $StudioHome)) {
|
|
New-Item -ItemType Directory -Path $StudioHome -Force | Out-Null
|
|
}
|
|
|
|
$VenvPython = Join-Path $VenvDir "Scripts\python.exe"
|
|
$_Migrated = $false
|
|
|
|
if (Test-Path $VenvPython) {
|
|
# New layout already exists -- nuke for fresh install
|
|
substep "removing existing environment for fresh install..."
|
|
Remove-Item -Recurse -Force $VenvDir
|
|
} elseif (Test-Path (Join-Path $StudioHome ".venv\Scripts\python.exe")) {
|
|
# Old layout (~/.unsloth/studio/.venv) exists -- validate before migrating
|
|
$OldVenv = Join-Path $StudioHome ".venv"
|
|
$OldPy = Join-Path $OldVenv "Scripts\python.exe"
|
|
substep "found legacy Studio environment, validating..."
|
|
$prevEAP2 = $ErrorActionPreference
|
|
$ErrorActionPreference = "Continue"
|
|
try {
|
|
& $OldPy -c "import torch; A = torch.ones((2,2)); B = A + A" 2>$null | Out-Null
|
|
$torchOk = ($LASTEXITCODE -eq 0)
|
|
} catch { $torchOk = $false }
|
|
$ErrorActionPreference = $prevEAP2
|
|
if ($torchOk) {
|
|
substep "legacy environment is healthy -- migrating..."
|
|
Move-Item -Path $OldVenv -Destination $VenvDir -Force
|
|
substep "moved .venv -> unsloth_studio"
|
|
$_Migrated = $true
|
|
} else {
|
|
substep "legacy environment failed validation -- creating fresh environment" "Yellow"
|
|
Remove-Item -Recurse -Force $OldVenv -ErrorAction SilentlyContinue
|
|
}
|
|
} elseif (Test-Path (Join-Path $env:USERPROFILE "unsloth_studio\Scripts\python.exe")) {
|
|
# CWD-relative venv from old install.ps1 -- migrate to absolute path
|
|
$CwdVenv = Join-Path $env:USERPROFILE "unsloth_studio"
|
|
substep "found CWD-relative Studio environment, migrating to $VenvDir..."
|
|
Move-Item -Path $CwdVenv -Destination $VenvDir -Force
|
|
substep "moved ~/unsloth_studio -> ~/.unsloth/studio/unsloth_studio"
|
|
$_Migrated = $true
|
|
}
|
|
|
|
if (-not (Test-Path $VenvPython)) {
|
|
step "venv" "creating Python $($DetectedPython.Version) virtual environment"
|
|
substep "$VenvDir"
|
|
$venvExit = Invoke-InstallCommand { uv venv $VenvDir --python "$($DetectedPython.Path)" }
|
|
if ($venvExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to create virtual environment (exit code $venvExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
} else {
|
|
step "venv" "using migrated environment"
|
|
substep "$VenvDir"
|
|
}
|
|
|
|
# ── Detect GPU (robust: PATH + hardcoded fallback paths, mirrors setup.ps1) ──
|
|
$HasNvidiaSmi = $false
|
|
$NvidiaSmiExe = $null
|
|
try {
|
|
$nvSmiCmd = Get-Command nvidia-smi -ErrorAction SilentlyContinue
|
|
if ($nvSmiCmd) {
|
|
& $nvSmiCmd.Source *> $null
|
|
if ($LASTEXITCODE -eq 0) { $HasNvidiaSmi = $true; $NvidiaSmiExe = $nvSmiCmd.Source }
|
|
}
|
|
} catch {}
|
|
if (-not $HasNvidiaSmi) {
|
|
foreach ($p in @(
|
|
"$env:ProgramFiles\NVIDIA Corporation\NVSMI\nvidia-smi.exe",
|
|
"$env:SystemRoot\System32\nvidia-smi.exe"
|
|
)) {
|
|
if (Test-Path $p) {
|
|
try {
|
|
& $p *> $null
|
|
if ($LASTEXITCODE -eq 0) { $HasNvidiaSmi = $true; $NvidiaSmiExe = $p; break }
|
|
} catch {}
|
|
}
|
|
}
|
|
}
|
|
if ($HasNvidiaSmi) {
|
|
step "gpu" "NVIDIA GPU detected"
|
|
} else {
|
|
step "gpu" "none (chat-only / GGUF)" "Yellow"
|
|
substep "Training and GPU inference require an NVIDIA GPU with drivers installed." "Yellow"
|
|
}
|
|
|
|
# ── Choose the correct PyTorch index URL based on driver CUDA version ──
|
|
# Mirrors Get-PytorchCudaTag in setup.ps1.
|
|
function Get-TorchIndexUrl {
|
|
$baseUrl = if ($env:UNSLOTH_PYTORCH_MIRROR) { $env:UNSLOTH_PYTORCH_MIRROR.TrimEnd('/') } else { "https://download.pytorch.org/whl" }
|
|
if (-not $NvidiaSmiExe) { return "$baseUrl/cpu" }
|
|
try {
|
|
$output = & $NvidiaSmiExe 2>&1 | Out-String
|
|
if ($output -match 'CUDA Version:\s+(\d+)\.(\d+)') {
|
|
$major = [int]$Matches[1]; $minor = [int]$Matches[2]
|
|
if ($major -ge 13) { return "$baseUrl/cu130" }
|
|
if ($major -eq 12 -and $minor -ge 8) { return "$baseUrl/cu128" }
|
|
if ($major -eq 12 -and $minor -ge 6) { return "$baseUrl/cu126" }
|
|
if ($major -ge 12) { return "$baseUrl/cu124" }
|
|
if ($major -ge 11) { return "$baseUrl/cu118" }
|
|
return "$baseUrl/cpu"
|
|
}
|
|
} catch {}
|
|
substep "could not determine CUDA version from nvidia-smi, defaulting to cu126" "Yellow"
|
|
return "$baseUrl/cu126"
|
|
}
|
|
$TorchIndexUrl = Get-TorchIndexUrl
|
|
|
|
# ── Print CPU-only hint when no GPU detected ──
|
|
if (-not $SkipTorch -and $TorchIndexUrl -like "*/cpu") {
|
|
Write-Host ""
|
|
substep "No NVIDIA GPU detected." "Yellow"
|
|
substep "Installing CPU-only PyTorch. If you only need GGUF chat/inference," "Yellow"
|
|
substep "re-run with --no-torch for a faster, lighter install:" "Yellow"
|
|
substep ".\install.ps1 --no-torch" "Yellow"
|
|
Write-Host ""
|
|
}
|
|
|
|
# ── Install PyTorch first, then unsloth separately ──
|
|
#
|
|
# Why two steps?
|
|
# `uv pip install unsloth --torch-backend=cpu` on Windows resolves to
|
|
# unsloth==2024.8 (a pre-CLI release with no unsloth.exe) because the
|
|
# cpu-only solver cannot satisfy newer unsloth's dependencies.
|
|
# Installing torch first from the explicit CUDA index, then upgrading
|
|
# unsloth in a second step, avoids this solver dead-end.
|
|
#
|
|
# Why --upgrade-package instead of --upgrade?
|
|
# `--upgrade unsloth` re-resolves ALL dependencies including torch,
|
|
# pulling torch from default PyPI and stripping the +cuXXX suffix
|
|
# that step 1 installed (e.g. torch 2.5.1+cu124 -> 2.10.0 with no
|
|
# CUDA suffix). `--upgrade-package unsloth` upgrades ONLY unsloth
|
|
# to the latest version while preserving the already-pinned torch
|
|
# CUDA wheels. Missing dependencies (transformers, trl, peft, etc.)
|
|
# are still pulled in because they are new, not upgrades.
|
|
#
|
|
# ── Helper: find no-torch-runtime.txt ──
|
|
function Find-NoTorchRuntimeFile {
|
|
if ($StudioLocalInstall -and (Test-Path (Join-Path $RepoRoot "studio\backend\requirements\no-torch-runtime.txt"))) {
|
|
return Join-Path $RepoRoot "studio\backend\requirements\no-torch-runtime.txt"
|
|
}
|
|
$installed = Get-ChildItem -Path $VenvDir -Recurse -Filter "no-torch-runtime.txt" -ErrorAction SilentlyContinue |
|
|
Where-Object { $_.FullName -like "*studio*backend*requirements*no-torch-runtime.txt" } |
|
|
Select-Object -ExpandProperty FullName -First 1
|
|
return $installed
|
|
}
|
|
|
|
if ($_Migrated) {
|
|
# Migrated env: force-reinstall unsloth+unsloth-zoo to ensure clean state
|
|
# in the new venv location, while preserving existing torch/CUDA
|
|
substep "upgrading unsloth in migrated environment..."
|
|
if ($SkipTorch) {
|
|
# No-torch: install unsloth + unsloth-zoo with --no-deps, then
|
|
# runtime deps (typer, safetensors, transformers, etc.) with --no-deps.
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.4.5" unsloth-zoo }
|
|
if ($baseInstallExit -eq 0) {
|
|
$NoTorchReq = Find-NoTorchRuntimeFile
|
|
if ($NoTorchReq) {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps -r $NoTorchReq }
|
|
}
|
|
}
|
|
} else {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --reinstall-package unsloth --reinstall-package unsloth-zoo "unsloth>=2026.4.5" unsloth-zoo }
|
|
}
|
|
if ($baseInstallExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
if ($StudioLocalInstall) {
|
|
substep "overlaying local repo (editable)..."
|
|
$overlayExit = Invoke-InstallCommand { uv pip install --python $VenvPython -e $RepoRoot --no-deps }
|
|
if ($overlayExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to overlay local repo (exit code $overlayExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
}
|
|
} elseif ($TorchIndexUrl) {
|
|
if ($SkipTorch) {
|
|
substep "skipping PyTorch (--no-torch flag set)." "Yellow"
|
|
} else {
|
|
substep "installing PyTorch ($TorchIndexUrl)..."
|
|
$torchInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython "torch>=2.4,<2.11.0" torchvision torchaudio --index-url $TorchIndexUrl }
|
|
if ($torchInstallExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to install PyTorch (exit code $torchInstallExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
}
|
|
|
|
substep "installing unsloth (this may take a few minutes)..."
|
|
if ($SkipTorch) {
|
|
# No-torch: install unsloth + unsloth-zoo with --no-deps, then
|
|
# runtime deps (typer, safetensors, transformers, etc.) with --no-deps.
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps --upgrade-package unsloth --upgrade-package unsloth-zoo "unsloth>=2026.4.5" unsloth-zoo }
|
|
if ($baseInstallExit -eq 0) {
|
|
$NoTorchReq = Find-NoTorchRuntimeFile
|
|
if ($NoTorchReq) {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --no-deps -r $NoTorchReq }
|
|
}
|
|
}
|
|
} elseif ($StudioLocalInstall) {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --upgrade-package unsloth "unsloth>=2026.4.5" unsloth-zoo }
|
|
} else {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython --upgrade-package unsloth "$PackageName" }
|
|
}
|
|
if ($baseInstallExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
|
|
if ($StudioLocalInstall) {
|
|
substep "overlaying local repo (editable)..."
|
|
$overlayExit = Invoke-InstallCommand { uv pip install --python $VenvPython -e $RepoRoot --no-deps }
|
|
if ($overlayExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to overlay local repo (exit code $overlayExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
}
|
|
} else {
|
|
# Fallback: GPU detection failed to produce a URL -- let uv resolve torch
|
|
substep "installing unsloth (this may take a few minutes)..."
|
|
if ($StudioLocalInstall) {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython unsloth-zoo "unsloth>=2026.4.5" --torch-backend=auto }
|
|
if ($baseInstallExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
substep "overlaying local repo (editable)..."
|
|
$overlayExit = Invoke-InstallCommand { uv pip install --python $VenvPython -e $RepoRoot --no-deps }
|
|
if ($overlayExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to overlay local repo (exit code $overlayExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
} else {
|
|
$baseInstallExit = Invoke-InstallCommand { uv pip install --python $VenvPython "$PackageName" --torch-backend=auto }
|
|
if ($baseInstallExit -ne 0) {
|
|
Write-Host "[ERROR] Failed to install unsloth (exit code $baseInstallExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
# ── Run studio setup ──
|
|
# setup.ps1 will handle installing Git, CMake, Visual Studio Build Tools,
|
|
# CUDA Toolkit, Node.js, and other dependencies automatically via winget.
|
|
step "setup" "running unsloth studio setup..."
|
|
$UnslothExe = Join-Path $VenvDir "Scripts\unsloth.exe"
|
|
if (-not (Test-Path $UnslothExe)) {
|
|
Write-Host "[ERROR] unsloth CLI was not installed correctly." -ForegroundColor Red
|
|
Write-Host " Expected: $UnslothExe" -ForegroundColor Yellow
|
|
Write-Host " This usually means an older unsloth version was installed that does not include the Studio CLI." -ForegroundColor Yellow
|
|
Write-Host " Try re-running the installer or see: https://github.com/unslothai/unsloth?tab=readme-ov-file#-quickstart" -ForegroundColor Yellow
|
|
return
|
|
}
|
|
# Tell setup.ps1 to skip base package installation (install.ps1 already did it)
|
|
$env:SKIP_STUDIO_BASE = "1"
|
|
$env:STUDIO_PACKAGE_NAME = $PackageName
|
|
$env:UNSLOTH_NO_TORCH = if ($SkipTorch) { "true" } else { "false" }
|
|
# Always set STUDIO_LOCAL_INSTALL explicitly to avoid stale values from
|
|
# a previous --local run in the same PowerShell session.
|
|
if ($StudioLocalInstall) {
|
|
$env:STUDIO_LOCAL_INSTALL = "1"
|
|
$env:STUDIO_LOCAL_REPO = $RepoRoot
|
|
} else {
|
|
$env:STUDIO_LOCAL_INSTALL = "0"
|
|
Remove-Item Env:STUDIO_LOCAL_REPO -ErrorAction SilentlyContinue
|
|
}
|
|
# Use 'studio setup' (not 'studio update') because 'update' pops
|
|
# SKIP_STUDIO_BASE, which would cause redundant package reinstallation
|
|
# and bypass the fast-path version check from PR #4667.
|
|
$studioArgs = @('studio', 'setup')
|
|
if ($script:UnslothVerbose) { $studioArgs += '--verbose' }
|
|
& $UnslothExe @studioArgs
|
|
$setupExit = $LASTEXITCODE
|
|
if ($setupExit -ne 0) {
|
|
Write-Host "[ERROR] unsloth studio setup failed (exit code $setupExit)" -ForegroundColor Red
|
|
return
|
|
}
|
|
|
|
New-StudioShortcuts -UnslothExePath $UnslothExe
|
|
|
|
# ── Expose `unsloth` via a shim dir containing only unsloth.exe ──
|
|
# We do NOT add the venv Scripts dir to PATH (it also holds python.exe
|
|
# and pip.exe, which would hijack the user's system interpreter).
|
|
# Hardlink preferred; falls back to copy if cross-volume or non-NTFS.
|
|
#
|
|
# Clean up the legacy venv Scripts PATH entry that older installers wrote.
|
|
# Without this, upgrade users keep python/pip hijacked even after the shim
|
|
# approach is in place.
|
|
$LegacyScriptsDir = Join-Path $VenvDir "Scripts"
|
|
try {
|
|
$legacyKey = [Microsoft.Win32.Registry]::CurrentUser.CreateSubKey('Environment')
|
|
try {
|
|
$rawPath = $legacyKey.GetValue('Path', '', [Microsoft.Win32.RegistryValueOptions]::DoNotExpandEnvironmentNames)
|
|
if ($rawPath) {
|
|
[string[]]$pathEntries = $rawPath -split ';'
|
|
$normalLegacy = $LegacyScriptsDir.Trim().Trim('"').TrimEnd('\').ToLowerInvariant()
|
|
$expNormalLegacy = [Environment]::ExpandEnvironmentVariables($LegacyScriptsDir).Trim().Trim('"').TrimEnd('\').ToLowerInvariant()
|
|
$filtered = @($pathEntries | Where-Object {
|
|
$stripped = $_.Trim().Trim('"')
|
|
$rawNorm = $stripped.TrimEnd('\').ToLowerInvariant()
|
|
$expNorm = [Environment]::ExpandEnvironmentVariables($stripped).TrimEnd('\').ToLowerInvariant()
|
|
($rawNorm -ne $normalLegacy -and $rawNorm -ne $expNormalLegacy) -and
|
|
($expNorm -ne $normalLegacy -and $expNorm -ne $expNormalLegacy)
|
|
})
|
|
$cleanedPath = $filtered -join ';'
|
|
if ($cleanedPath -ne $rawPath) {
|
|
$legacyKey.SetValue('Path', $cleanedPath, [Microsoft.Win32.RegistryValueKind]::ExpandString)
|
|
# Broadcast so other processes see the removal immediately.
|
|
try {
|
|
$d = "UnslothPathRefresh_$([guid]::NewGuid().ToString('N').Substring(0,8))"
|
|
[Environment]::SetEnvironmentVariable($d, '1', 'User')
|
|
[Environment]::SetEnvironmentVariable($d, [NullString]::Value, 'User')
|
|
} catch { }
|
|
}
|
|
}
|
|
} finally {
|
|
$legacyKey.Close()
|
|
}
|
|
} catch { }
|
|
$ShimDir = Join-Path $StudioHome "bin"
|
|
New-Item -ItemType Directory -Force -Path $ShimDir | Out-Null
|
|
$ShimExe = Join-Path $ShimDir "unsloth.exe"
|
|
# try/catch: if unsloth.exe is locked (Studio running), keep the old shim.
|
|
$shimUpdated = $false
|
|
try {
|
|
if (Test-Path $ShimExe) { Remove-Item $ShimExe -Force -ErrorAction Stop }
|
|
try {
|
|
New-Item -ItemType HardLink -Path $ShimExe -Target $UnslothExe -ErrorAction Stop | Out-Null
|
|
} catch {
|
|
Copy-Item -Path $UnslothExe -Destination $ShimExe -Force -ErrorAction Stop # fallback: copy
|
|
}
|
|
$shimUpdated = $true
|
|
} catch {
|
|
if (Test-Path $ShimExe) {
|
|
Write-Host "[WARN] Could not refresh unsloth launcher at $ShimExe." -ForegroundColor Yellow
|
|
Write-Host " This usually means a running 'unsloth studio' process still holds the file open." -ForegroundColor Yellow
|
|
Write-Host " Close Studio and re-run the installer to pick up the latest launcher." -ForegroundColor Yellow
|
|
Write-Host " Continuing with the existing launcher." -ForegroundColor Yellow
|
|
} else {
|
|
Write-Host "[WARN] Could not create unsloth launcher at $ShimExe" -ForegroundColor Yellow
|
|
Write-Host " $($_.Exception.Message)" -ForegroundColor Yellow
|
|
Write-Host " Launch unsloth studio directly via '$UnslothExe' until the next successful install." -ForegroundColor Yellow
|
|
}
|
|
}
|
|
# Only add to PATH when the launcher actually exists on disk.
|
|
$pathAdded = $false
|
|
if (Test-Path $ShimExe) {
|
|
$pathAdded = Add-ToUserPath -Directory $ShimDir -Position 'Prepend'
|
|
}
|
|
if ($shimUpdated -and $pathAdded) {
|
|
step "path" "added unsloth launcher to PATH"
|
|
}
|
|
Refresh-SessionPath # sync current session with registry
|
|
|
|
# Launch studio automatically in interactive terminals;
|
|
# in non-interactive environments (CI, Docker) just print instructions.
|
|
$IsInteractive = [Environment]::UserInteractive -and (-not [Console]::IsInputRedirected)
|
|
if ($IsInteractive) {
|
|
& $UnslothExe studio -H 0.0.0.0 -p 8888
|
|
} else {
|
|
step "launch" "manual commands:"
|
|
substep "& `"$VenvDir\Scripts\Activate.ps1`""
|
|
substep "unsloth studio -H 0.0.0.0 -p 8888"
|
|
Write-Host ""
|
|
}
|
|
}
|
|
|
|
Install-UnslothStudio @args
|