remove black, isort from dev dependencies.

Just use ruff.

pyproject.toml

@@ -16,11 +16,9 @@ tomli = { version = "^2.0.1", python = "<3.11" }
 [tool.poetry.group.dev.dependencies]
 pytest = "^7.4.4"
 pytest-randomly = "^3.12.0"
-pytest-repeat = "^0.9.1"
-black = ">=22.3,<25.0"
-isort = "^5.10.1"
-tox = "^4.6.3"
-ruff = "^0.1.3"
+ruff = "^0.8.6"
+tox = "^4.23.2"
+virtualenv-pyenv = "^0.5.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
@@ -45,70 +43,14 @@ legacy_tox_ini = """
 envlist = py310,py311,py312
 
 [testenv]
+setenv = VIRTUALENV_DISCOVERY=pyenv
 allowlist_externals = poetry
 commands =
   poetry install -v
   poetry run pytest tests/
 """
 
-[tool.black]
-line-length = 88
-
 [tool.ruff]
-select = [
-    "E",
-    "F",
-]
-ignore = [
-    "E501",
-]
-fixable = [
-    "A",
-    "B",
-    "C",
-    "D",
-    "E",
-    "F",
-    "G",
-    "I",
-    "N",
-    "Q",
-    "S",
-    "T",
-    "W",
-    "ANN",
-    "ARG",
-    "BLE",
-    "COM",
-    "DJ",
-    "DTZ",
-    "EM",
-    "ERA",
-    "EXE",
-    "FBT",
-    "ICN",
-    "INP",
-    "ISC",
-    "NPY",
-    "PD",
-    "PGH",
-    "PIE",
-    "PL",
-    "PT",
-    "PTH",
-    "PYI",
-    "RET",
-    "RSE",
-    "RUF",
-    "SIM",
-    "SLF",
-    "TCH",
-    "TID",
-    "TRY",
-    "UP",
-    "YTT",
-]
-unfixable = []
 exclude = [
     ".bzr",
     ".direnv",
@@ -132,14 +74,59 @@ exclude = [
     "node_modules",
     "venv",
 ]
+
+# Same as Black.
 line-length = 88
-dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+indent-width = 4
+
+# Assume Python 3.10
 target-version = "py310"
 
-[tool.ruff.mccabe]
+[tool.ruff.lint]
+# Enable Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
+# Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
+# McCabe complexity (`C901`) by default.
+select = ["E4", "E7", "E9", "F"]
+ignore = []
+
+# Allow fix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.format]
+# Like Black, use double quotes for strings.
+quote-style = "double"
+
+# Like Black, indent with spaces, rather than tabs.
+indent-style = "space"
+
+# Like Black, respect magic trailing commas.
+skip-magic-trailing-comma = false
+
+# Like Black, automatically detect the appropriate line ending.
+line-ending = "auto"
+
+# Enable auto-formatting of code examples in docstrings. Markdown,
+# reStructuredText code/literal blocks and doctests are all supported.
+#
+# This is currently disabled by default, but it is planned for this
+# to be opt-out in the future.
+docstring-code-format = false
+
+# Set the line length limit used when formatting code snippets in
+# docstrings.
+#
+# This only has an effect when the `docstring-code-format` setting is
+# enabled.
+docstring-code-line-length = "dynamic"
+
+[tool.ruff.lint.mccabe]
 max-complexity = 10
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "__init__.py" = [
     "E402",
     "F401",