starlark: Patch tests to unbreak on aarch64

Pull in the patch from the submitted pull request to upstream to fix the
unit test data that doesn't tolerate floating point approximation.

- Unbreaks aarch64-linux
- Fixes the build for aarch64-darwin

pkgs/development/interpreters/starlark/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, buildGoModule }:
+{ stdenv, lib, fetchFromGitHub, buildGoModule, fetchpatch }:
 buildGoModule rec {
   pname = "starlark";
   version = "unstable-2022-03-02";
@@ -12,10 +12,18 @@ buildGoModule rec {
 
   vendorSha256 = "sha256-lgL5o3MQfZekZ++BNESwV0LeoTxwEZfziQAe99zm4RY=";
 
+  patches = [
+    # Fix floating point imprecision issue in the test suite.
+    # https://github.com/google/starlark-go/pull/409
+    (fetchpatch {
+      url = "https://github.com/google/starlark-go/commit/be6ed3bfcc376e5bf6fe2257ae89ddfb00d14e2c.patch";
+      sha256 = "sha256-A0tHPso6SfFn73kICcA9/5n3JHd7hMdQMGty+4L6T4k=";
+    })
+  ];
+
   ldflags = [ "-s" "-w" ];
 
   meta = with lib; {
-    broken = (stdenv.isLinux && stdenv.isAarch64);
     homepage = "https://github.com/google/starlark-go";
     description = "An interpreter for Starlark, implemented in Go";
     license = licenses.bsd3;