This is the mirror image of #2170.

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- [x] Add a [CHANGELOG](https://github.com/pyodide/pyodide/blob/main/docs/project/changelog.md) entry
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Add `default_converter` argument to `to_js` and `toJs`. This is the mirror image of #2170.

### Checklists

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- [x] Add a [CHANGELOG](https://github.com/pyodide/pyodide/blob/main/docs/project/changelog.md) entry
- [x] Add / update tests
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This is to disable SIMD optimization until SAFARI has good support for it.


diff --git a/numpy/distutils/command/build.py b/numpy/distutils/command/build.py
index a4fda537d..11fffe282 100644
--- a/numpy/distutils/command/build.py
+++ b/numpy/distutils/command/build.py
@@ -37,7 +37,7 @@ def initialize_options(self):
         self.warn_error = False
         self.cpu_baseline = "min"
         self.cpu_dispatch = "max -xop -fma4" # drop AMD legacy features by default
-        self.disable_optimization = False
+        self.disable_optimization = True
         """
         the '_simd' module is a very large. Adding more dispatched features
         will increase binary size and compile time. By default we minimize

This is to disable SIMD optimization until SAFARI has good support for it.


diff --git a/numpy/distutils/command/build.py b/numpy/distutils/command/build.py
index a4fda537d..11fffe282 100644
--- a/numpy/distutils/command/build.py
+++ b/numpy/distutils/command/build.py
@@ -37,7 +37,7 @@ def initialize_options(self):
         self.warn_error = False
         self.cpu_baseline = "min"
         self.cpu_dispatch = "max -xop -fma4" # drop AMD legacy features by default
-        self.disable_optimization = False
+        self.disable_optimization = True
         """
         the '_simd' module is a very large. Adding more dispatched features
         will increase binary size and compile time. By default we minimize
