Allow pytest to detect configuration from pyproject.toml

.config/requirements.in

@@ -1,9 +1,9 @@
 GitPython
-diskcache >= 5.2.1
 blessings
 build>=0.3.1.post1  # py_package
 click >= 7.1.2
 colorama  # for Windows
+diskcache >= 5.2.1
 importlib-metadata
 pip>=21.0.1  # py_package
 pluggy
@@ -12,5 +12,6 @@ pyyaml
 rich >= 9.0
 shellingham
 subprocess-tee >= 0.3.1
+tomli >= 1.1.0 ; python_version < "3.11"
 twine>=3.4.1  # py_package
 typer

src/mk/loaders.py

@@ -0,0 +1,15 @@
+"""Wrappers for loading different configuration files."""
+from pathlib import Path
+
+try:
+    import tomllib  # type: ignore
+except ModuleNotFoundError:
+    import tomli as tomllib  # type: ignore
+
+
+def load_toml(file: Path) -> dict:
+    """Load a TOML file if exists or return empty dictionary."""
+    if file.is_file():
+        with open(file, "rb") as handle:
+            return tomllib.load(handle)
+    return {}

src/mk/tools/pytest.py

@@ -4,6 +4,7 @@
 from typing import List, Optional
 
 from mk.exec import run_or_fail
+from mk.loaders import load_toml
 from mk.tools import Action, Tool
 
 
@@ -26,6 +27,9 @@ def run(self, action: Optional[Action] = None) -> None:
     def is_present(self, path: Path) -> bool:
         if os.path.isfile(path / "pytest.ini"):
             return True
+        data = load_toml(path / "pyproject.toml")
+        if data and data.get("tool", {}).get("pytest"):
+            return True
         return False
 
     def actions(self) -> List[Action]: