diff --git a/default.xml b/default.xml
index 031e86c..2415218 100644
--- a/default.xml
+++ b/default.xml
@@ -444,13 +444,15 @@
   <project path="pdk" name="platform/pdk" groups="pdk" />
   <project path="platform_testing" name="platform/platform_testing" />
   <project path="prebuilts/android-emulator" name="platform/prebuilts/android-emulator" groups="pdk-fs" clone-depth="1" />
-  <project path="prebuilts/clang/darwin-x86/host/3.6" name="platform/prebuilts/clang/darwin-x86/host/3.6" groups="pdk,darwin" />
   <project path="prebuilts/clang/linux-x86/host/3.6" name="platform/prebuilts/clang/linux-x86/host/3.6" groups="pdk,linux" />
-  <project path="prebuilts/clang/host/darwin-x86" name="platform/prebuilts/clang/host/darwin-x86" groups="pdk,darwin" />
   <project path="prebuilts/clang/host/linux-x86" name="platform/prebuilts/clang/host/linux-x86" groups="pdk" />
   <project path="prebuilts/deqp" name="platform/prebuilts/deqp" groups="pdk-fs" />
   <project path="prebuilts/devtools" name="platform/prebuilts/devtools" groups="pdk-fs" />
   <project path="prebuilts/eclipse" name="platform/prebuilts/eclipse" groups="pdk" />
+
+  <!-- Disable darwin prebuilds
+  <project path="prebuilts/clang/host/darwin-x86" name="platform/prebuilts/clang/host/darwin-x86" groups="pdk,darwin" />
+  <project path="prebuilts/clang/darwin-x86/host/3.6" name="platform/prebuilts/clang/darwin-x86/host/3.6" groups="pdk,darwin" />
   <project path="prebuilts/eclipse-build-deps" name="platform/prebuilts/eclipse-build-deps" groups="notdefault,eclipse" />
   <project path="prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9" name="platform/prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9" groups="pdk,darwin,arm" />
   <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.8" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.8" groups="pdk,darwin,arm" />
@@ -458,6 +460,12 @@
   <project path="prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" name="platform/prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" groups="pdk,darwin" />
   <project path="prebuilts/gcc/darwin-x86/mips/mips64el-linux-android-4.9" name="platform/prebuilts/gcc/darwin-x86/mips/mips64el-linux-android-4.9" groups="pdk,darwin,mips" />
   <project path="prebuilts/gcc/darwin-x86/x86/x86_64-linux-android-4.9" name="platform/prebuilts/gcc/darwin-x86/x86/x86_64-linux-android-4.9" groups="pdk,darwin,x86" />
+  <project path="prebuilts/gdb/darwin-x86" name="platform/prebuilts/gdb/darwin-x86" groups="darwin" />
+  <project path="prebuilts/go/darwin-x86" name="platform/prebuilts/go/darwin-x86" groups="darwin,tradefed" />
+  <project path="prebuilts/python/darwin-x86/2.7.5" name="platform/prebuilts/python/darwin-x86/2.7.5" groups="darwin,pdk,pdk-cw-fs,pdk-fs" />
+  <project path="prebuilts/ninja/darwin-x86" name="platform/prebuilts/ninja/darwin-x86" groups="darwin,pdk,tradefed" />
+  -->
+
   <project path="prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9" name="platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9" groups="pdk,linux,arm" />
   <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.8" name="platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8" groups="pdk,linux,arm" />
   <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9" name="platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9" groups="pdk,linux,arm" />
@@ -466,18 +474,14 @@
   <project path="prebuilts/gcc/linux-x86/host/x86_64-w64-mingw32-4.8" name="platform/prebuilts/gcc/linux-x86/host/x86_64-w64-mingw32-4.8" groups="pdk-fs" />
   <project path="prebuilts/gcc/linux-x86/mips/mips64el-linux-android-4.9" name="platform/prebuilts/gcc/linux-x86/mips/mips64el-linux-android-4.9" groups="pdk,linux,mips" />
   <project path="prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9" name="platform/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9" groups="pdk,linux,x86" />
-  <project path="prebuilts/gdb/darwin-x86" name="platform/prebuilts/gdb/darwin-x86" groups="darwin" />
   <project path="prebuilts/gdb/linux-x86" name="platform/prebuilts/gdb/linux-x86" groups="linux" />
-  <project path="prebuilts/go/darwin-x86" name="platform/prebuilts/go/darwin-x86" groups="darwin,tradefed" />
   <project path="prebuilts/go/linux-x86" name="platform/prebuilts/go/linux-x86" groups="linux,tradefed" />
   <project path="prebuilts/gradle-plugin" name="platform/prebuilts/gradle-plugin" groups="pdk-cw-fs,pdk-fs" />
   <project path="prebuilts/libs/libedit" name="platform/prebuilts/libs/libedit" groups="pdk-cw-fs,pdk-fs" />
   <project path="prebuilts/maven_repo/android" name="platform/prebuilts/maven_repo/android" groups="pdk-cw-fs,pdk-fs" />
   <project path="prebuilts/misc" name="platform/prebuilts/misc" groups="pdk" />
   <project path="prebuilts/ndk" name="platform/prebuilts/ndk" groups="pdk" />
-  <project path="prebuilts/ninja/darwin-x86" name="platform/prebuilts/ninja/darwin-x86" groups="darwin,pdk,tradefed" />
   <project path="prebuilts/ninja/linux-x86" name="platform/prebuilts/ninja/linux-x86" groups="linux,pdk,tradefed" />
-  <project path="prebuilts/python/darwin-x86/2.7.5" name="platform/prebuilts/python/darwin-x86/2.7.5" groups="darwin,pdk,pdk-cw-fs,pdk-fs" />
   <project path="prebuilts/python/linux-x86/2.7.5" name="platform/prebuilts/python/linux-x86/2.7.5" groups="linux,pdk,pdk-cw-fs,pdk-fs" />
   <project path="prebuilts/qemu-kernel" name="platform/prebuilts/qemu-kernel" groups="pdk" clone-depth="1" />
   <project path="prebuilts/sdk" name="platform/prebuilts/sdk" groups="pdk" />