install-robustness-analysis.md•6.02 kB
# Voice Mode Install Script Robustness Analysis
## Problem Summary
The original install.sh script had critical reliability issues when invoking voice-mode CLI commands after MCP configuration:
1. **Inconsistent Command Detection**: Mixed logic trying both `voice-mode` and `uvx voice-mode`
2. **PATH Issues**: UV/UVX installation didn't guarantee immediate availability
3. **No Verification**: No check that voice-mode actually works after MCP setup
4. **Fragile Tests**: `uvx voice-mode --help` might work while actual commands fail
5. **Error Handling**: Poor error reporting and recovery guidance
## Robust Solution Implemented
### 1. Consistent Command Strategy
```bash
check_voice_mode_cli() {
# Always prefer uvx approach for consistency
# This matches exactly how the MCP server is configured
if command -v uvx >/dev/null 2>&1; then
if timeout 30 uvx voice-mode --version >/dev/null 2>&1; then
echo "uvx voice-mode"
return 0
fi
fi
return 1
}
```
**Key Improvements:**
- **Always use `uvx voice-mode`** - matches MCP configuration exactly
- **Test with `--version`** - lightweight command that doesn't require full init
- **Timeout protection** - prevents hanging on network issues
- **Clear failure cases** - explicit error reporting
### 2. Enhanced PATH Management
```bash
install_uvx() {
# Install UV
curl -LsSf https://astral.sh/uv/install.sh | sh
export PATH="$HOME/.local/bin:$PATH"
# Immediate verification
if ! command -v uvx >/dev/null 2>&1; then
print_error "UV/UVX installation failed - command not found"
return 1
fi
# Functional test
if ! uvx --version >/dev/null 2>&1; then
print_error "UV/UVX installation failed - command not working"
return 1
fi
}
```
**Key Improvements:**
- **Immediate verification** after installation
- **Functional testing** to ensure uvx actually works
- **PATH export** for current session
- **Clear error messages** for debugging
### 3. Post-MCP Verification
```bash
verify_voice_mode_after_mcp() {
print_step "Verifying Voice Mode CLI availability after MCP configuration..."
sleep 2 # Allow caching to settle
if ! voice_mode_cmd=$(check_voice_mode_cli); then
print_warning "Voice Mode CLI not available yet. This could be due to:"
echo " • PATH not updated in current shell"
echo " • uvx cache not refreshed"
echo " • Network connectivity issues"
echo "You can install services manually later with:"
echo " uvx voice-mode whisper install"
return 1
fi
print_success "Voice Mode CLI verified: $voice_mode_cmd"
return 0
}
```
**Key Improvements:**
- **Verification step** after MCP configuration
- **Helpful diagnostics** explaining potential issues
- **Manual recovery instructions** for users
- **Graceful degradation** when automated setup fails
### 4. Robust Service Installation
```bash
install_service() {
local service_name="$1"
local voice_mode_cmd="$2"
local description="$3"
# Pre-flight check
if ! timeout 30 $voice_mode_cmd $service_name --help >/dev/null 2>&1; then
print_warning "$description service command not available"
return 1
fi
# Install with logging
local temp_log=$(mktemp)
if timeout 600 $voice_mode_cmd $service_name install --auto-enable 2>&1 | tee "$temp_log"; then
if ! grep -qi "error\|failed\|traceback" "$temp_log"; then
print_success "$description installed successfully"
return 0
fi
fi
print_warning "$description installation may have failed"
tail -10 "$temp_log" | sed 's/^/ /'
return 1
}
```
**Key Improvements:**
- **Pre-flight checks** ensure service commands exist
- **Output capture** for better error diagnosis
- **Success verification** checks for error keywords
- **Detailed logging** shows actual failure output
- **Longer timeout** (10 minutes) for large downloads
## Edge Cases Handled
### 1. Fresh System Installation
- **UV/UVX not in PATH initially** → Export PATH immediately after install
- **Python dependencies missing** → Install system packages first
- **uvx cache empty** → Allow time for first-run initialization
### 2. Network Issues
- **Slow downloads** → Extended timeout (10 minutes)
- **Connectivity problems** → Clear error messages and manual instructions
- **Package index failures** → Graceful fallback with instructions
### 3. Permission Issues
- **Sudo requirements** → Early sudo caching with clear prompts
- **File permissions** → Use user-local installations where possible
- **Service installation** → Handle both systemd and launchd automatically
### 4. Platform Differences
- **macOS vs Linux** → Different package managers and paths
- **WSL2 audio** → Special audio configuration and troubleshooting
- **Shell variations** → Support bash, zsh, different profile files
## Reliability Principles Applied
### 1. Test Early and Often
- Verify UV/UVX installation immediately
- Test voice-mode availability before attempting service installation
- Pre-flight checks for each service command
### 2. Fail Fast with Clear Messages
- Stop on critical failures (UV/UVX install)
- Provide specific error messages
- Include manual recovery instructions
### 3. Graceful Degradation
- Continue setup if non-critical components fail
- Provide manual installation commands
- Clear success/failure reporting
### 4. Consistent Approach
- Always use `uvx voice-mode` (matches MCP config)
- Standardized error handling across functions
- Unified logging and output capture
## Result
The improved script now handles fresh system installations reliably by:
1. **Ensuring tools are available** before using them
2. **Using consistent command patterns** that match the MCP configuration
3. **Providing clear diagnostics** when things go wrong
4. **Offering manual recovery paths** for edge cases
5. **Testing functionality** not just presence
This makes the installer work reliably across different environments while providing clear guidance when manual intervention is needed.