Base directory for this skill: ${CLAUDE_PLUGIN_BASE_DIR}

Your Task

Guide the user through installing bitwize-music plugin dependencies based on their Python environment and requested components.

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Setup Assistant

You help users install and verify plugin dependencies.

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Step 1: Detect Environment

Run these checks in parallel:

# Python version
python3 --version

# Check if externally managed
python3 -c "import sysconfig; print(sysconfig.get_path('purelib'))" 2>&1 | grep -q "/usr" && echo "EXTERNALLY_MANAGED" || echo "USER_MANAGED"

# Check for pipx
command -v pipx >/dev/null 2>&1 && echo "pipx: installed" || echo "pipx: not installed"

# Check for venv support
python3 -m venv --help >/dev/null 2>&1 && echo "venv: supported" || echo "venv: not supported"

# Platform
uname -s

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Step 2: Check Component Status

IMPORTANT: Run these checks sequentially, not in parallel. If one check fails, continue with the remaining checks to show complete status.

CRITICAL: Always check the venv, not system Python!

# Set venv path (macOS/Linux/WSL uses bin/python3; native Windows uses Scripts/python.exe)
VENV_PYTHON=~/.bitwize-music/venv/bin/python3
[ -f "$VENV_PYTHON" ] || VENV_PYTHON=~/.bitwize-music/venv/Scripts/python.exe

# Check if venv exists
if [ -f "$VENV_PYTHON" ]; then
    echo "✅ Venv exists at ~/.bitwize-music/venv"

    # Check each component in the venv
    # 2.x serves MCPServer from mcp.server.mcpserver, 1.x serves FastMCP from
    # mcp.server.fastmcp; the server takes either, so probe both (#537).
    $VENV_PYTHON -c "import mcp.server.mcpserver" 2>/dev/null || $VENV_PYTHON -c "import mcp.server.fastmcp" 2>/dev/null && echo "✅ mcp installed" || echo "❌ mcp not installed (need mcp[cli]>=1.28.1,<3)"
    $VENV_PYTHON -c "import matchering; print('✅ matchering installed')" 2>&1 || echo "❌ matchering not installed"
    $VENV_PYTHON -c "import boto3; print('✅ boto3 installed')" 2>&1 || echo "❌ boto3 not installed"
    $VENV_PYTHON -c "from playwright.sync_api import sync_playwright; print('✅ playwright installed')" 2>&1 || echo "❌ playwright not installed"

    # Check for version drift against requirements.txt
    $VENV_PYTHON -c "
import importlib.metadata, pathlib
reqs = pathlib.Path('${CLAUDE_PLUGIN_ROOT}/requirements.txt').read_text()
stale = []
for line in reqs.splitlines():
    line = line.split('#')[0].strip()
    if not line or '==' not in line:
        continue
    name, _, ver = line.partition('==')
    name = name.split('[')[0].strip()
    try:
        installed = importlib.metadata.version(name)
        if installed != ver:
            stale.append(f'  {name}: {installed} → {ver}')
    except importlib.metadata.PackageNotFoundError:
        stale.append(f'  {name}: missing (needs {ver})')
if stale:
    print('⚠️  Version drift detected:')
    print('\n'.join(stale))
else:
    print('✅ All package versions match requirements.txt')
" 2>&1
else
    echo "❌ Venv not found at ~/.bitwize-music/venv"
    echo "   Run: python3 -m venv ~/.bitwize-music/venv   # macOS/Linux/WSL"
    echo "   Or:  py -3 -m venv ~/.bitwize-music/venv      # Windows"
fi

All components are installed together in the venv via requirements.txt.

---

Step 3: Show Installation Commands

Always use the unified venv approach — it works on all platforms and is automatically detected by the plugin.

# Create unified venv (if it doesn't exist)
python3 -m venv ~/.bitwize-music/venv                                                    # macOS/Linux/WSL
py -3 -m venv ~/.bitwize-music/venv                                                       # Windows (native)

# Install ALL plugin dependencies
~/.bitwize-music/venv/bin/pip install -r ${CLAUDE_PLUGIN_ROOT}/requirements.txt                     # macOS/Linux/WSL
~/.bitwize-music/venv/Scripts/python.exe -m pip install -r ${CLAUDE_PLUGIN_ROOT}/requirements.txt   # Windows (native)

# Set up document hunter browser
~/.bitwize-music/venv/bin/playwright install chromium                                     # macOS/Linux/WSL
~/.bitwize-music/venv/Scripts/playwright.exe install chromium                             # Windows (native)

That's it! The plugin automatically detects and uses the platform venv (~/.bitwize-music/venv on macOS/Linux/WSL, %USERPROFILE%\.bitwize-music\venv on native Windows). No configuration needed.

Works on:

• ✅ Linux (externally-managed Python)
• ✅ macOS
• ✅ Windows (native — Core tier, best-effort; audio tooling needs WSL2)
• ✅ Windows (WSL)
• ✅ All other systems

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Step 4: Installation Guide

Present a clear, simple installation guide:

1. Environment detected: [Python version, Platform]
2. Missing components: [list what needs to be installed]
3. Installation commands:

   python3 -m venv ~/.bitwize-music/venv                                                  # macOS/Linux/WSL
   ~/.bitwize-music/venv/bin/pip install -r ${CLAUDE_PLUGIN_ROOT}/requirements.txt         # macOS/Linux/WSL
   ~/.bitwize-music/venv/bin/playwright install chromium                                   # macOS/Linux/WSL
   
   py -3 -m venv ~/.bitwize-music/venv                                                               # Windows (native)
   ~/.bitwize-music/venv/Scripts/python.exe -m pip install -r ${CLAUDE_PLUGIN_ROOT}/requirements.txt # Windows (native)
   ~/.bitwize-music/venv/Scripts/playwright.exe install chromium                                     # Windows (native)
   

4. After installation:
   • Restart Claude Code to reload the plugin
   • MCP server should show as running in /plugin status
   • Run /bitwize-music:setup again to verify

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Step 5: Verify Installation (if requested)

After user reports they've installed, re-run the checks from Step 2 and confirm:

✅ MCP server: Ready ✅ Audio mastering: Ready ✅ Cloud uploads: Ready ✅ Document hunter: Ready

Next steps: Run /bitwize-music:configure to set up your workspace paths.

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Output Format

Use clear sections with checkboxes for status:

## bitwize-music Setup

### Environment
- Python: 3.12.3
- System: Linux

### Component Status
- [❌] MCP server
- [❌] Audio mastering
- [❌] Cloud uploads
- [❌] Document hunter

### Installation

Run these commands to install all plugin dependencies (macOS/Linux/WSL shown; see Step 3 for the Windows native `py -3` / `Scripts\` equivalents):

```bash
# Create unified venv
python3 -m venv ~/.bitwize-music/venv

# Install ALL dependencies
~/.bitwize-music/venv/bin/pip install -r ${CLAUDE_PLUGIN_ROOT}/requirements.txt

# Set up browser
~/.bitwize-music/venv/bin/playwright install chromium

After installation:

1. Restart Claude Code
2. All components will work automatically
3. Run /bitwize-music:setup to verify

The plugin automatically detects ~/.bitwize-music/venv — everything just works!

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## Remember

- **Be specific** - show exact commands for their environment
- **Prioritize user install** for externally-managed Python
- **Explain what each component does** so they can decide what to install
- **Test commands work** before suggesting them
- **Clear next steps** after installation