## Description
Currently, the Hamilton CLI only supports loading context files from `.json` and `.py` files. It
would be beneficial to add support for TOML files, especially since many Python projects use
`pyproject.toml` for project configuration.
## Motivation
- Many Python projects already have `pyproject.toml` files
- It would follow Python packaging conventions to keep Hamilton configuration in `
[tool.hamilton]` section
- Users could consolidate their project configuration in one place
- TOML is a more readable format than JSON for configuration files
## Implementation Plan
I've already implemented this feature in a fork which:
- Adds support for `.toml` file extension in the CLI context loading
- Supports both formats:
1. Top-level Hamilton headers: `HAMILTON_CONFIG`, `HAMILTON_FINAL_VARS`, etc.
2. Tool-specific section: `[tool.hamilton]` with `config`, `final_vars`, etc. sub-sections
Added comprehensive tests for both formats
Updated CLI help text to reflect the new supported file type
## Files Modified
- `hamilton/cli/logic.py` - Enhanced `load_context` function
- `hamilton/cli/__main__.py` - Updated help text
- Added test files and test functions
## Testing
All existing tests continue to pass, and new tests cover the TOML functionality.
I'd like to submit a pull request for this feature if the maintainers approve.
