python3Packages.cryptography: 2.9.2 -> 3.0

Backwards incompatible changes:
- Removed support for passing an Extension instance to
  from_issuer_subject_key_identifier(), as per our deprecation policy.
- Support for LibreSSL 2.7.x, 2.8.x, and 2.9.0 has been removed (2.9.1+
  is still supported).
- Dropped support for macOS 10.9, macOS users must upgrade to 10.10 or
  newer.
- RSA generate_private_key() no longer accepts public_exponent values
  except 65537 and 3 (the latter for legacy purposes).
- X.509 certificate parsing now enforces that the version field contains
  a valid value, rather than deferring this check until version is
  accessed.

Deprecations:
- Deprecated support for Python 2. At the time there is no time table
  for actually dropping support, however we strongly encourage all users
  to upgrade their Python, as Python 2 no longer receives support from
  the Python core team.

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

@@ -22,11 +22,11 @@
 
 buildPythonPackage rec {
   pname = "cryptography";
-  version = "2.9.2"; # Also update the hash in vectors.nix
+  version = "3.0"; # Also update the hash in vectors.nix
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "a0c30272fb4ddda5f5ffc1089d7405b7a71b0b0f51993cb4e5dbb4590b2fc229";
+    sha256 = "0lr06a9317n2iwfqwz9mpalqm99acqwk1478arvyj1jj0ay4v4lf";
   };
 
   outputs = [ "out" "dev" ];

pkgs/development/python-modules/cryptography/vectors.nix

@@ -7,7 +7,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1d4iykcv7cn9j399hczlxm5pzxmqy6d80h3j16dkjwlmv3293b4r";
+    sha256 = "0fa26ggksyhknb43cja1g0jwp35qkdbavivdq6yynj1igd2z1vsj";
   };
 
   # No tests included