.yamllint.yaml

---

extends: default

rules:
  indentation:
    spaces: 2

  # Match line length to the one set by `black` the Python formatter
  line-length:
    max: 88

  # octal values must start with 0o, numbers may not start with e.g. 01
  # It is simpler, and costs nothing, to disallow values like `010`
  # except as quoted strings
  octal-values:
    forbid-implicit-octal: true

  # This bans implicit nulls, nulls must be explicit.
  empty-values: enable

  # With these settings, and `%YAML 1.2` in the file header, we have :
  #
  #  Booleans: true, false
  #  None: null, Null, NULL
  #  not-a-number: .NaN, .NAN, .nan
  #  Infinity:  .Inf, .INF, .inf
  #  Strings: On, ON, Off, OFF, YES, Yes, NO, No
  #  Disallowed if not quoted: True, TRUE, False, FALSE
  #
  # Setting `truthy: disabled` would allow the disabled values, as Booleans
  #
  # If desired, you could ban unquoted infinity and not-a-number by
  # float-values: forbind-int: true
  # float-values: forbind-nan: true