199 lines
9.3 KiB
PowerShell
199 lines
9.3 KiB
PowerShell
#Requires -Version 5.1
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<#
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.SYNOPSIS
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NexusOS installer for Windows (native - no WSL).
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.DESCRIPTION
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Installs Python, Node.js, and Ollama via winget, builds the Promethean
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virtualenv and the web UI, and drops a desktop shortcut. NexusOS then runs
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as a single process: the backend on :8000 serves the built UI, and the AI
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(Ollama) is started manually from the UI.
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Run from the nexus-core directory:
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Right-click install-windows.ps1 -> "Run with PowerShell"
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Requires Windows 10/11 with winget (App Installer). No WSL, no reboot.
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#>
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Set-StrictMode -Version Latest
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$ErrorActionPreference = "Stop"
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$RepoRoot = $PSScriptRoot
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# -- Helpers -------------------------------------------------------------------
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function Write-Step { param([string]$Msg) Write-Host "`n==> $Msg" -ForegroundColor Cyan }
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function Write-OK { param([string]$Msg) Write-Host " ok: $Msg" -ForegroundColor Green }
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function Write-Warn { param([string]$Msg) Write-Host " warn: $Msg" -ForegroundColor Yellow }
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function Write-Fail { param([string]$Msg) Write-Host "`n ERROR: $Msg`n" -ForegroundColor Red; Read-Host "Press Enter to exit"; exit 1 }
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# Pull the current machine + user PATH out of the registry into this session, so
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# tools winget just installed become runnable without opening a new shell.
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function Update-SessionPath {
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$m = [System.Environment]::GetEnvironmentVariable("Path", "Machine")
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$u = [System.Environment]::GetEnvironmentVariable("Path", "User")
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$env:Path = ($m, $u | Where-Object { $_ }) -join ";"
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}
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function Install-Winget {
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param([string]$Id, [string]$Label)
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Write-Step "Installing $Label"
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winget install --id $Id -e --source winget `
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--accept-package-agreements --accept-source-agreements --disable-interactivity | Out-Host
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# winget returns non-zero when the package is already installed / up to date;
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# that's not a failure for us. Verify presence after refreshing PATH instead.
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Update-SessionPath
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Write-OK "$Label step done"
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}
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# -- Self-elevate to Administrator ---------------------------------------------
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$IsAdmin = ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(
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[Security.Principal.WindowsBuiltInRole]::Administrator)
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if (-not $IsAdmin) {
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Write-Host "Requesting administrator privileges..." -ForegroundColor Yellow
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Start-Process powershell -ArgumentList "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" -Verb RunAs
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exit
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}
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Write-Host ""
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Write-Host " NexusOS Installer for Windows (native)" -ForegroundColor White
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Write-Host " ======================================" -ForegroundColor DarkGray
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# -- winget present? -----------------------------------------------------------
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Write-Step "Checking winget"
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if (-not (Get-Command winget -ErrorAction SilentlyContinue)) {
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Write-Fail "winget not found. Install 'App Installer' from the Microsoft Store, then re-run this installer."
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}
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Write-OK "winget available"
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# -- Install runtimes ----------------------------------------------------------
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Install-Winget "Python.Python.3.12" "Python 3.12"
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Install-Winget "OpenJS.NodeJS.LTS" "Node.js LTS"
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Install-Winget "Ollama.Ollama" "Ollama"
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# -- Verify tools --------------------------------------------------------------
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Write-Step "Verifying tools"
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foreach ($t in @("python", "npm", "ollama")) {
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if (-not (Get-Command $t -ErrorAction SilentlyContinue)) {
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Write-Fail "$t is not on PATH after install. Close this window, open a new PowerShell, and re-run the installer."
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}
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Write-OK "$t found"
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}
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# -- Python venv + deps --------------------------------------------------------
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Write-Step "Building the Promethean virtualenv"
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$Venv = Join-Path $RepoRoot "Promethean"
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$VenvPy = Join-Path $Venv "Scripts\python.exe"
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if (-not (Test-Path $VenvPy)) {
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python -m venv $Venv
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}
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if (-not (Test-Path $VenvPy)) { Write-Fail "venv creation failed at $Venv" }
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& $VenvPy -m pip install --upgrade pip -q
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$Req = Join-Path $RepoRoot "requirements-wsl.txt" # CPU / pure-Python overlay - right for native Windows too
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if (-not (Test-Path $Req)) { Write-Fail "requirements file not found: $Req" }
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& $VenvPy -m pip install -r $Req
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if ($LASTEXITCODE -ne 0) { Write-Fail "pip install failed (exit $LASTEXITCODE) - see output above" }
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Write-OK "Python environment ready"
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# -- Frontend build ------------------------------------------------------------
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Write-Step "Building the web UI"
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Push-Location (Join-Path $RepoRoot "interface\web")
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npm install
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if ($LASTEXITCODE -ne 0) { Pop-Location; Write-Fail "npm install failed (exit $LASTEXITCODE) - see output above" }
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npm run build
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if ($LASTEXITCODE -ne 0) { Pop-Location; Write-Fail "npm run build failed (exit $LASTEXITCODE) - no UI would be served" }
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Pop-Location
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if (-not (Test-Path (Join-Path $RepoRoot "interface\web\dist\index.html"))) {
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Write-Fail "build reported success but interface\web\dist\index.html is missing"
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}
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Write-OK "Web UI built (interface\web\dist)"
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# -- Pull models (best-effort) -------------------------------------------------
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# Which models ship is decided in ONE place - DEFAULT_CHAT_MODEL and
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# DEFAULT_MEMORY_MODEL in synapse\nexus_config.py (rationale documented there).
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# Read them instead of hardcoding, so the installer can never pull one model
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# while the backend defaults to another.
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Push-Location $RepoRoot
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$ChatModel = (& $VenvPy -c "from synapse.nexus_config import DEFAULT_CHAT_MODEL as m; print(m)")
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$MemModel = (& $VenvPy -c "from synapse.nexus_config import DEFAULT_MEMORY_MODEL as m; print(m)")
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Pop-Location
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if ($LASTEXITCODE -ne 0 -or -not $ChatModel -or -not $MemModel) {
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Write-Fail "Could not read the default models from synapse\nexus_config.py - the venv install is broken"
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}
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Write-Step "Pulling models ($ChatModel for chat, $MemModel for memory)"
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Write-Host " Downloads a few GB; press Ctrl+C to skip and pull them later from the Models tab." -ForegroundColor DarkGray
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try {
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ollama pull $ChatModel | Out-Host
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Write-OK "$ChatModel ready (default chat model)"
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} catch {
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Write-Warn "$ChatModel pull skipped/failed - pull it from the Models tab later."
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}
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try {
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ollama pull $MemModel | Out-Host
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Write-OK "$MemModel ready (memory curator)"
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} catch {
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Write-Warn "$MemModel pull skipped/failed - the memory service will fall back to the chat model."
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}
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# Pin it as the default chat model. Runs from the repo root so the synapse
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# package imports; only writes the 'model' setting in the shared DB.
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Write-Step "Setting $ChatModel as the default model"
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Push-Location $RepoRoot
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& $VenvPy -c "from synapse.memory.store import store; from synapse.nexus_config import DEFAULT_CHAT_MODEL; store.update_settings({'model': DEFAULT_CHAT_MODEL})"
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$seedOk = ($LASTEXITCODE -eq 0)
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Pop-Location
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if ($seedOk) { Write-OK "Default model set to $ChatModel" }
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else { Write-Warn "Could not persist default model - pick it at the top of the chat instead." }
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# -- Make Ollama manual-start (NexusOS owns the lifecycle) ----------------------
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Write-Step "Setting Ollama to manual start"
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# The Ollama desktop app autostarts a server at every login, and the elevated
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# 'ollama pull' above leaves an elevated server the user-level app cannot stop -
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# which makes the Start/Stop AI button get stuck. Remove the login autostart and
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# stop the running server so NexusOS controls Ollama via its Start AI button.
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try {
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$ollamaAutostart = Join-Path ([Environment]::GetFolderPath("Startup")) "Ollama.lnk"
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if (Test-Path $ollamaAutostart) {
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Remove-Item $ollamaAutostart -Force
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Write-OK "Removed Ollama login autostart"
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}
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foreach ($img in @("ollama app.exe", "ollama.exe")) {
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taskkill /F /T /IM $img 2>$null | Out-Null
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}
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Write-OK "Ollama set to manual start"
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} catch {
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Write-Warn "Could not adjust Ollama autostart - you can still Start/Stop AI from the app."
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}
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# -- Desktop shortcut ----------------------------------------------------------
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Write-Step "Creating desktop shortcut"
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try {
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$Launcher = Join-Path $RepoRoot "launch_nexus.ps1"
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$LnkPath = Join-Path ([Environment]::GetFolderPath("Desktop")) "NexusOS.lnk"
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$ws = New-Object -ComObject WScript.Shell
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$lnk = $ws.CreateShortcut($LnkPath)
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$lnk.TargetPath = "powershell.exe"
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$lnk.Arguments = "-NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File `"$Launcher`""
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$lnk.WorkingDirectory = $RepoRoot
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$lnk.Description = "Launch NexusOS"
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$Ico = Join-Path $RepoRoot "assets\NexusOS.ico"
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if (Test-Path $Ico) { $lnk.IconLocation = "$Ico,0" }
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$lnk.Save()
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Write-OK "Desktop shortcut created"
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} catch {
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Write-Warn "Could not create desktop shortcut - launch with: powershell -File launch_nexus.ps1"
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}
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# -- Done ----------------------------------------------------------------------
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Write-Host ""
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Write-Host " ==========================================================" -ForegroundColor Green
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Write-Host " NexusOS is installed!" -ForegroundColor Green
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Write-Host ""
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Write-Host " Launch: double-click the NexusOS shortcut on your desktop" -ForegroundColor White
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Write-Host " (or run powershell -File launch_nexus.ps1)" -ForegroundColor White
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Write-Host ""
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Write-Host " The app opens at http://localhost:8000" -ForegroundColor White
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Write-Host " The AI starts OFF - click 'Start AI' in the sidebar to turn it on." -ForegroundColor White
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Write-Host " ==========================================================" -ForegroundColor Green
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Write-Host ""
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Read-Host "Press Enter to close"
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GitNexus · part of the Nexus stack