ponyc: 0.49.0 -> 0.50.0

Changelog:

0.49.1:

* Ban Unstable Variables

0.50.0:

* Fix crash with exhaustive match on Generics.
* Fix parameter names not being checked in all circumstances.
* Fix compiler crash to HeapToStack compiler pass.
* Strengthen the ordering for some atomic operations.
* Allow override of return types for FFI functions.
* Don't allow FFI calls in default methods or behaviours.

pkgs/development/compilers/ponyc/default.nix

···
 
 stdenv.mkDerivation (rec {
   pname = "ponyc";
-  version = "0.49.0";
+  version = "0.50.0";
 
   src = fetchFromGitHub {
     owner = "ponylang";
     repo = pname;
     rev = version;
-    sha256 = "sha256-WS3/POC+2vdx6bA8314sjkdWCIWGu9lJG4kbKMWfnX8=";
+    sha256 = "sha256-FnzlFTiJrqoUfnys+q9is6OH9yit5ExDiRszQ679QbY=";
 
     fetchSubmodules = true;
   };