# Ruff configuration for the repo-root Python that lives outside ./app:
# dev.py, prod.py and scripts/*.py.
#
# These are held to the same line-length and rule set as the app (see
# app/pyproject.toml), with one deliberate difference: target-version.
#
# The app runs on Python 3.14 inside the container, so app/pyproject.toml sets
# target-version = "py314" and the formatter normalises exception tuples to
# 3.14's bracketless `except A, B:` form. These files run on the *host* Python
# instead, where that syntax is a hard SyntaxError on 3.13 and older — a
# reformat under the app's target would make ./dev.py itself unrunnable for
# anyone not already on 3.14. Hence a conservative floor here.
line-length = 100
target-version = "py310"

exclude = [".git", ".venv", "venv", "env", "__pycache__", ".pytest_cache", "app"]

[lint]
# Mirrors app/pyproject.toml's selection, minus DJ (no Django in these files).
select = [
    "E4",    # pycodestyle errors (imports)
    "E7",    # pycodestyle errors (statements)
    "E9",    # pycodestyle errors (runtime)
    "F",     # pyflakes
    "PERF",  # perflint — performance anti-patterns
    "B",     # flake8-bugbear
    "C4",    # flake8-comprehensions
    "SIM",   # flake8-simplify
    "I",     # isort
]
ignore = ["PERF203"]

[lint.isort]
# scripts/*.py import my_practice (app/my_practice/) alongside third-party
# packages. Ruff auto-detects first-party status from filesystem layout, which
# gives a different answer depending on whether the file is resolved from the
# repo root (CI's native `ruff check`) or against the container's /app mount
# (./dev.py lint's stdin path) — the two disagreed on import grouping for the
# exact same file. Declared explicitly so both invocations agree.
known-first-party = ["my_practice"]