# PDG Regression Suite — requirements
# Canonical home: https://physics.magflowmeters.com/
#
# RUNNABLE-FIRST: this suite is STDLIB-ONLY. It runs on a bare Python 3 install
# (>= 3.8) with ZERO pip installs. The engine uses only the standard library:
#   csv, json, hashlib, pathlib, argparse, dataclasses
#
# Nothing below is required to RUN the regression engine:
#   python pdg_regression.py --data data --out out --config validation_config.yaml
#
# --- OPTIONAL ---
# PyYAML  : if present, validation_config.yaml is parsed with it. If ABSENT, a
#           built-in stdlib fallback parses the flat validation_config.yaml (or its
#           config.json mirror). Do NOT install it just to run the suite.
# PyYAML>=5.1
#
# --- DEV / TEST ONLY (needed only for `python -m pytest tests`) ---
# pytest>=6.0