pythonPackages.passlib: disable native support test on darwin (#197077)

Several instances of this test fail with error like:

  AssertionError: did not expect 'darwin' platform would have native support for '...'

It looks like passlib's tests erroneously assume that some methods
should not have support on Darwin while current nixpkgs does
support it through libxcrypt.

pkgs/development/python-modules/passlib/default.nix

@@ -1,4 +1,5 @@
 { lib
+, stdenv
 , buildPythonPackage
 , fetchPypi
 , argon2-cffi
@@ -25,12 +26,16 @@ buildPythonPackage rec {
   checkInputs = [
     pytestCheckHook
   ] ++ passthru.optional-dependencies.argon2
-    ++ passthru.optional-dependencies.bcrypt
-    ++ passthru.optional-dependencies.totp;
+  ++ passthru.optional-dependencies.bcrypt
+  ++ passthru.optional-dependencies.totp;
 
   disabledTests = [
     # timming sensitive
     "test_dummy_verify"
+  ]
+  # These tests fail because they don't expect support for algorithms provided through libxcrypt
+  ++ lib.optionals stdenv.isDarwin [
+    "test_82_crypt_support"
   ];
 
   meta = with lib; {