Apply patch

.github/workflows/test-cygwin.yml

@@ -14,10 +14,6 @@ on:
 permissions:
   contents: read
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
 jobs:
   build:
     runs-on: windows-latest

setup.py

@@ -15,6 +15,7 @@
 import sys
 import warnings
 
+import setuptools
 from setuptools import Extension, setup
 from setuptools.command.build_ext import build_ext
 
@@ -430,6 +431,14 @@ def get_macos_sdk_path(self):
         return sdk_path
 
     def build_extensions(self):
+        print("setuptools version", setuptools.__version__)
+        print("sys.platform", sys.platform)
+        print("compiler used", self.compiler)
+        self.compiler.shared_lib_extension = ".dll.a"
+        self.compiler.dylib_lib_extension = ".dll"
+        self.compiler.static_lib_format = self.compiler.shared_lib_format = "lib%s%s"
+        self.compiler.dylib_lib_format = "cyg%s%s"
+
         library_dirs = []
         include_dirs = []