Tidy up

cibuildwheel/macos.py

@@ -231,7 +231,7 @@ def setup_python(
         )
         sys.exit(1)
 
-    # install pip
+    # ensure pip is installed
     call(
         ["python", "-m", "ensurepip", "--default-pip"],
         env=env,

cibuildwheel/typing.py

@@ -1,7 +1,7 @@
 import os
 import subprocess
 import sys
-from typing import TYPE_CHECKING, Any, NoReturn, Set, Union
+from typing import TYPE_CHECKING, NoReturn, Set, Union
 
 if sys.version_info < (3, 8):
     from typing_extensions import Final, Literal, TypedDict
@@ -26,11 +26,9 @@ __all__ = (
 if TYPE_CHECKING:
     PopenBytes = subprocess.Popen[bytes]
     PathOrStr = Union[str, os.PathLike[str]]
-    CompletedProcess = subprocess.CompletedProcess[Any]
 else:
     PopenBytes = subprocess.Popen
     PathOrStr = Union[str, "os.PathLike[str]"]
-    CompletedProcess = subprocess.CompletedProcess
 
 
 PlatformName = Literal["linux", "macos", "windows"]

cibuildwheel/windows.py

@@ -10,7 +10,7 @@ from zipfile import ZipFile
 from .architecture import Architecture
 from .environment import ParsedEnvironment
 from .logger import log
-from .typing import CompletedProcess, PathOrStr
+from .typing import PathOrStr
 from .util import (
     BuildOptions,
     BuildSelector,
@@ -23,15 +23,12 @@ from .util import (
 
 
 def call(
-    args: Sequence[PathOrStr],
+    args: Sequence[PathOrStr], env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None
-    env: Optional[Dict[str, str]] = None,
+) -> None:
-    cwd: Optional[str] = None,
-    check: bool = True,
-) -> CompletedProcess:
     print("+ " + " ".join(str(a) for a in args))
     # we use shell=True here, even though we don't need a shell due to a bug
     # https://bugs.python.org/issue8557
-    return subprocess.run([str(a) for a in args], env=env, cwd=cwd, shell=True, check=check)
+    subprocess.run([str(a) for a in args], env=env, cwd=cwd, shell=True, check=True)
 
 
 def shell(command: str, env: Optional[Dict[str, str]] = None, cwd: Optional[str] = None) -> None:
@@ -181,12 +178,13 @@ def setup_python(
     # make sure pip is installed and available on PATH
     if not (installation_path / "Scripts" / "pip.exe").exists():
         # perhaps pip is installed, but not available as 'pip.exe'...
-        pip_is_installed = (
+        try:
-            call(
+            call(["python", "-m", "pip", "--version"], env=env, cwd="C:\\cibw")
-                ["python", "-m", "pip", "--version"], env=env, cwd="C:\\cibw", check=False
+        except subprocess.CalledProcessError:
-            ).returncode
+            pip_is_installed = False
-            == 0
+        else:
-        )
+            pip_is_installed = True
+
         if pip_is_installed:
             # if it's there, remove that version of pip.
             call(["python", "-m", "pip", "uninstall", "--yes", "pip"], env=env, cwd="C:\\cibw")