--- setup.orig.py	2022-10-14 21:20:34.000000000 +0200
+++ setup.py	2022-10-14 21:21:11.000000000 +0200
@@ -23,8 +23,8 @@
 buildGPLCode = os.getenv('RAWPY_BUILD_GPL_CODE') == '1'
 
 # don't treat mingw as Windows (https://stackoverflow.com/a/51200002)
-isWindows = os.name == 'nt' and 'GCC' not in sys.version
-isMac = sys.platform == 'darwin'
+isWindows = False
+isMac = False
 is64Bit = sys.maxsize > 2**32
 
 # adapted from cffi's setup.py
