# Session Summary - November 8, 2025

## Key Accomplishments

### 1. Dual Installation Paths
We implemented two ways for users to access and run the Zexus interpreter:

#### Path 1: ZPM Integration
- Enhanced `zpm.py` to handle Zexus interpreter installation
- Added special-case handling in `zpm install zexus` command
- Created a new `zpm zx` subcommand for direct CLI access
- Implemented fallback mechanisms in this order:
  1. Use system-installed `zx` if available
  2. Use local repo `./zx` wrapper if present
  3. Run Python module directly with correct PYTHONPATH

#### Path 2: Pip Installation
- Added `setup.py` with console_scripts entry
- Configured `zx` command to point to `zexus.cli.main:cli`
- Support for `pip install -e .` (development mode)
- Created shim fallback when pip install isn't possible

### 2. Debug System Implementation
- Added configuration management in `src/zexus/config.py`
- Implemented three debug levels:
  - none: minimal output
  - minimal: important warnings/info
  - full: detailed evaluation traces
- Successfully tested with comprehensive test suite
- Debug output verified across parsing and evaluation stages

### 3. CLI and Launcher Improvements
- Created portable `zx` shell wrapper
- Preserved original binary as `zx.bin`
- Fixed CLI argument handling for legacy mode
- Ensured proper PYTHONPATH setup

## Current Status

### Working Features
- `zpm zx run file.zx` - Run Zexus files through ZPM
- `zpm install zexus` - Install interpreter with fallback mechanisms
- Debug system with three levels (none/minimal/full)
- Local development wrapper (`./zx`)

### Known Issues
- Pip editable install currently blocked by packaging artifacts
- Multiple .egg-info directories causing metadata conflicts

## Future Work

### Short Term
- Clean up packaging metadata for smooth pip installation
- Consider adding pyproject.toml for modern packaging
- Remove redundant .egg-info artifacts

### Medium Term
- Integrate strategy_context logging with debug levels
- Add logging configuration to user settings
- Consider adding logging to file option

## Usage Examples

### Running Zexus Programs
```bash
# Using ZPM
zpm zx run myapp.zx

# Using local wrapper
./zx run myapp.zx

# Using installed command (when pip install succeeds)
zx run myapp.zx
```

### Installing Zexus
```bash
# Via ZPM (recommended)
zpm install zexus

# Via pip (when packaging is fixed)
pip install -e .
```

### Debug Control
```bash
# Set debug level
zx debug minimal

# Run with debug output
zx run myapp.zx  # Will respect current debug level
```

## Implementation Details

### Key Files Modified
- `zpm.py`: Added Zexus installation and `zx` command support
- `setup.py`: Added package configuration and entry point
- `main.py`: Fixed CLI argument handling
- `zx`: Created new portable wrapper script

### Directory Structure
```
zexus-interpreter/
├── src/
│   └── zexus/
│       ├── cli/
│       ├── config.py
│       └── evaluator.py
├── zx          # New wrapper script
├── zx.bin      # Original binary (preserved)
├── setup.py    # New package configuration
└── zpm.py      # Enhanced with Zexus support
```