Remove custom Windows interrupt handling

pyproject.toml

@@ -26,7 +26,6 @@ dependencies = [
   "click",
   "tomli; python_version < '3.11'",
   "colorama; platform_system == 'Windows'",
-  "pywin32; platform_system == 'Windows'",
   "importlib_metadata >= 7"
 ]
 dynamic = ['version']

spin/cmds/meson.py

@@ -5,7 +5,6 @@
 import re
 import shutil
 import signal
-import subprocess
 import sys
 from enum import Enum
 from pathlib import Path
@@ -819,43 +818,26 @@ def run(ctx, *, args, build_dir=None):
     _set_pythonpath(build_dir, quiet=True)
 
     is_windows = sys.platform == "win32"
-    is_posix = not is_windows
 
-    if is_posix:
+    if not is_windows:
         # Let the subprocess handle its own signals
+        # Except on Windows, where it already seems to work as intended,
+        # and `preexec_fn` is not supported
         signal.signal(signal.SIGINT, signal.SIG_IGN)
 
     def attach_sigint():
         # Reset SIGINT handler to default
         signal.signal(signal.SIGINT, signal.SIG_DFL)
 
-    kwargs = (
-        {"creationflags": subprocess.CREATE_NEW_PROCESS_GROUP} if is_windows else {}
-    )
-
     # --- launch subprocess ---
     p = _run(
         cmd_args,
         echo=False,
         shell=shell,
         sys_exit=False,
-        preexec_fn=attach_sigint if is_posix else None,
-        **kwargs,
+        preexec_fn=None if is_windows else attach_sigint,
     )
 
-    # Handle Ctrl+C (SIGINT) on Windows
-    def windows_ctrl_handler(ctrl_type):
-        if ctrl_type == signal.CTRL_C_EVENT:
-            # Forward CTRL_BREAK_EVENT to the child process
-            p.send_signal(signal.CTRL_BREAK_EVENT)
-            return True
-        return False
-
-    if is_windows:
-        import win32api
-
-        win32api.SetConsoleCtrlHandler(windows_ctrl_handler, True)
-
     # Is the user trying to run a Python script, without calling the Python interpreter?
     executable = args[0]
     if (