Revert previous "precommit autoupdate (tox-dev#3214)" commit; it's br…

…oken

The top-level linter setting names in pyproject.toml have changed, and
while this _could_ accept the old names until they're fixed, it choses not
to and fails the build.

Fixing that is easy, but results in yet more failures that were not
previously appearing in unchanged code.

- Revert "[pre-commit.ci] pre-commit autoupdate (tox-dev#3214)"
- This reverts commit 3347933.

.pre-commit-config.yaml

@@ -27,7 +27,7 @@ repos:
       - id: blacken-docs
         additional_dependencies: [black==23.12.1]
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.2.0
+    rev: v0.1.14
     hooks:
       - id: ruff-format
       - id: ruff

src/tox/session/env_select.py

@@ -189,7 +189,7 @@ def _ensure_envs_valid(self) -> None:
         for env in self._cli_envs or []:
             if env.startswith(".pkg_external"):  # external package
                 continue
-            factors: dict[str, str | None] = dict.fromkeys(env.split("-"))
+            factors: dict[str, str | None] = {k: None for k in env.split("-")}
             found_factors: set[str] = set()
             for factor in factors:
                 if (

src/tox/tox_env/api.py

@@ -139,7 +139,7 @@ def register_config(self) -> None:
 
         def pass_env_post_process(values: list[str]) -> list[str]:
             values.extend(self._default_pass_env())
-            result = sorted(dict.fromkeys(values).keys())
+            result = sorted({k: None for k in values}.keys())
             invalid_chars = set(string.whitespace)
             invalid = [v for v in result if any(c in invalid_chars for c in v)]
             if invalid: