matlab-install-products

# Installing MATLAB Products with MATLAB Package Manager (mpm) - Deterministic Protocol

Use this skill when asked to install MathWorks products using MATLAB Package Manager (mpm) from the OS command line.

$ARGUMENTS

## When to Use

- User asks to install MATLAB, Simulink, toolboxes, or support packages via the command line
- User wants a scripted, repeatable MATLAB installation (CI/CD, containers, fleet provisioning)
- User asks about mpm, MATLAB Package Manager, or non-interactive MATLAB installs
- User needs to add products to an existing MATLAB installation using mpm

## When NOT to Use

- User wants to install via the graphical MATLAB installer or MathWorks website
- User is asking about MATLAB licensing or activation (separate workflow)
- User wants to manage MATLAB Add-Ons from within MATLAB (use the Add-On Manager)
- User needs to install MATLAB Engine API for Python, Java, or C++ (different process)

## Non-Negotiable Determinism Contract (follow exactly)
- Follow the steps in **Protocol** in order. Do not add extra steps or checks.
- Use **only** the canonical shell for the OS. Do not switch shells.
- Use **absolute paths** to `mpm` / `mpm.exe`. Never rely on relative paths.
- Retry downloads at most **once**. Otherwise stop and report the error.
- If security software blocks execution: **stop** and instruct escalation. Do not bypass.

## Safety Gate (Windows) — MANDATORY, NO EXCEPTIONS

**STOP. Read this entire section before executing ANY Windows step.**

1. **NEVER** use `powershell.exe -Command` for ANY reason. Bash mangles `$`, backticks, quotes, arrays, and script blocks before PowerShell sees them. This WILL cause `unexpected EOF` or syntax errors.
2. **NEVER** use bash heredoc syntax (`cat > file <<'EOF'`) or bash redirection (`echo ... >`) to create PowerShell scripts.
3. **ALWAYS** write `.ps1` files using the **Write file tool**, then invoke with:
   `powershell.exe -NoLogo -NoProfile -NonInteractive -ExecutionPolicy Bypass -File <absolute-script-path>`
4. Do not emit CMD-only syntax (`if not exist`, `set VAR=`, `%USERPROFILE%`). Use PowerShell equivalents (`Test-Path`, `$env:USERPROFILE`).

5. **ASCII only** in all `.ps1` file content. No em dashes (`—`), en dashes (`–`), curly quotes, or other non-ASCII characters. They cause PowerShell parse errors (broken string terminators, missing brace errors) when file encoding doesn't preserve them.

**If you are about to type `powershell.exe -Command` — STOP. You are violating this rule. Use the Write file tool to create a .ps1 file instead.**

Windows script authoring pattern:
- **WRONG**: `powershell.exe -Command "$script = @'...`  (bash corrupts `$` and heredocs)
- **WRONG**: `cat > C:/Windows/Temp/script.ps1 <<'PS1' ... PS1`  (bash heredoc, breaks on Windows)
- **CORRECT**: create a unique temp folder, use the **Write file tool** to write `.ps1` files into it, then run with `-File`

Unique temp folder:
- Before Step 1, create a timestamped working folder using the Bash tool:
  - Windows: `mkdir -p "C:/Users/<username>/AppData/Local/Temp/mpm-<YYYYMMDD-HHMMSS>"`
  - Linux/macOS: `mkdir -p "/tmp/mpm-<YYYYMMDD-HHMMSS>"`
- Use this folder for ALL generated scripts and input files throughout the protocol
- Because the folder is new, the Write file tool can always create files in it without needing to delete anything first
- Delete the entire folder during the final cleanup step

Windows PowerShell syntax reminders:
- Bad: `if not exist C:\Users\name\Downloads mkdir C:\Users\name\Downloads` (CMD syntax)
- Good: `if (-not (Test-Path -LiteralPath 'C:\Users\name\Downloads')) { New-Item -ItemType Directory -Path 'C:\Users\name\Downloads' | Out-Null }`

Do not ask the user for the exact product name or identifier. Look it up using the appropriate mpm input file from https://www.mathworks.com/products/mpm.html
Do not ask the user whether to install dependencies or not. mpm will take care of it. Just install whatever the user asked for, and let mpm do the rest.
If a user types the shortname of MATLAB releases, automatically use the correct expanded full name. e.g. 25a is R2025a, 25b is R2025b

## Required Inputs (ask only if missing)
1. Operating system (Windows, Linux, macOS)
2. MATLAB release (for example `R2025b`)
3. Installation destination (absolute path)
4. Requested products / toolboxes / support packages

## Confirmation Rule
Before executing any steps, always confirm the user's choices:
- Release
- Destination folder
- Products
- Support packages

Ask for confirmation in one message. The user can reply `yes to all` to confirm everything at once. If they reply with specific changes, update the selections and confirm again.
Display each value to be confirmed in its own new line.
Note at the bottom of the confirmation message: "Required dependencies will be installed automatically by mpm."

## Plan Display (after confirmation, before execution)

Once the user confirms their inputs, display a clear installation plan before running any commands. Adapt the template below for the target OS (use forward slashes and `/tmp/` for Linux/macOS, omit `.ps1` script references, and omit the UAC note). Use this format:

```
Here's what I'll do:

Working folder: <C:\Users\<username>\AppData\Local\Temp\mpm-YYYYMMDD-HHMMSS>

Step 1 — Download mpm
  Check for mpm at <canonical mpm path>
  Download from <URL> if not present
  Script: <working folder>\mpm_download.ps1

Step 2 — Prepare input file
  Download release template for <release> from mathworks.com
  Set destination folder: <destination>
  Enable products: <comma-separated list>
  Input file: <working folder>\mpm_input_<releaselower>.txt
  Script: <working folder>\mpm_prepare_input.ps1

Step 3 — Run installation
  Execute mpm install using the prepared input file
  <Windows only: note that elevated permissions (UAC prompt) will be required>

Step 4 — Verify
  Confirm MATLAB binary exists: <completion artifact path>
  Verify products via: <DESTINATION>/appdata/prodcontents.json
  <if sup