python3Packages.wandb: fix x86_64-darwin

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

@@ -7,6 +7,7 @@
   buildGoModule,
   git,
   versionCheckHook,
+  fetchpatch2,
 
   ## gpu-stats
   rustPlatform,
@@ -118,6 +119,23 @@ let
 
     sourceRoot = "${src.name}/core";
 
+    # x86_64-darwin fails with:
+    # "link: duplicated definition of symbol dlopen, from github.com/ebitengine/purego and github.com/ebitengine/purego"
+    # This is fixed in purego 0.8.3, but wandb-core uses 0.8.2, so we pull in the fix here.
+    patches = lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64) [
+      (fetchpatch2 {
+        url = "https://github.com/ebitengine/purego/commit/1638563e361522e5f63511d84c4541ae1c5fd704.patch";
+        stripLen = 1;
+        extraPrefix = "vendor/github.com/ebitengine/purego/";
+        # These are not vendored by wandb-core
+        excludes = [
+          "vendor/github.com/ebitengine/purego/.github/workflows/test.yml"
+          "vendor/github.com/ebitengine/purego/internal/fakecgo/gen.go"
+        ];
+        hash = "sha256-GoT/OL6r3rJY5zoUyl3kGzSRpX3PoI7Yjpe7oRb0cFc=";
+      })
+    ];
+
     # hardcode the `gpu_stats` binary path.
     postPatch = ''
       substituteInPlace pkg/monitor/gpuresourcemanager.go \