python3Packages.oscrypto: patch ctypes call

The ctypes call did not work, because it requires binutils.bintools to
be available in every downstream dependency.

Fixes #176917.

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

@@ -22,9 +22,16 @@ buildPythonPackage rec {
     hash = "sha256-CmDypmlc/kb6ONCUggjT1Iqd29xNSLRaGh5Hz36dvOw=";
   };
 
+  postPatch = ''
+    for file in oscrypto/_openssl/_lib{crypto,ssl}_c{ffi,types}.py; do
+      substituteInPlace $file \
+        --replace "get_library('crypto', 'libcrypto.dylib', '42')" "'${openssl.out}/lib/libcrypto${stdenv.hostPlatform.extensions.sharedLibrary}'" \
+        --replace "get_library('ssl', 'libssl', '44')" "'${openssl.out}/lib/libssl${stdenv.hostPlatform.extensions.sharedLibrary}'"
+    done
+  '';
+
   propagatedBuildInputs = [
     asn1crypto
-    openssl
   ];
 
   checkInputs = [