Bail if no setup.cfg present

Author: sus-pe

src/_pytest/main.py

@@ -393,16 +393,18 @@ def _in_build(path: Path) -> bool:
     if not path.is_dir():
         return False
 
+    setup_cfg = path.parent / "setup.cfg"
+    if not setup_cfg.is_file():
+        return False
+
     if any(fnmatch_ex(pat, path) for pat in ("build", "dist")):
-        setup_cfg = path.parent / "setup.cfg"
-        if (setup_cfg).is_file():
-            setup_py = path.parent / "setup.py"
-            if setup_py.is_file():
-                return True
-
-            toml = path.parent / "pyproject.toml"
-            if toml.is_file() and _is_setuptools_in_pyproject_toml(toml):
-                return True
+        setup_py = path.parent / "setup.py"
+        if setup_py.is_file():
+            return True
+
+        toml = path.parent / "pyproject.toml"
+        if toml.is_file() and _is_setuptools_in_pyproject_toml(toml):
+            return True
 
     return False