pyscard: fix darwin build, remove pcsc library mixing

This should be built against a single version of PCSC: either the one
from pcsclite, or the one from Apple's PCSC framework.

pkgs/development/python-modules/pyscard/ignore-macos-bug.patch

@@ -0,0 +1,22 @@
+diff --git a/test/test_SCardGetErrorMessage.py b/test/test_SCardGetErrorMessage.py
+old mode 100644
+new mode 100755
+index c6fe755..c1217f5
+--- a/test/test_SCardGetErrorMessage.py
++++ b/test/test_SCardGetErrorMessage.py
+@@ -29,12 +29,10 @@ class TestError(unittest.TestCase):
+         self.assertEqual(res, expected)
+ 
+         res = SCardGetErrorMessage(1)
++        expected = "Unknown error: 0x00000001"
+         # macOS bug not yet fixed
+-        if get_platform().startswith('macosx-') and get_platform() < 'macosx-10.13':
+-            expected = "Unkown error: 0x00000001"
+-        else:
+-            expected = "Unknown error: 0x00000001"
+-        self.assertEqual(res, expected)
++        macos_bug_expected = "Unkown error: 0x00000001"
++        self.assertIn(res, [expected, macos_bug_expected])
+ 
+ 
+ if __name__ == '__main__':