Darwin stdenvBootstrap fixes 2025-10 (#448523)

pkgs/stdenv/darwin/bootstrap-files/aarch64-apple-darwin.nix

@@ -1,3 +1,5 @@
+# FIXME: Changed to arm64-apple-darwin in release.nix stdenvBootstrapTools, please handle when refreshing
+
 # Autogenerated by maintainers/scripts/bootstrap-files/refresh-tarballs.bash as:
 # $ ./refresh-tarballs.bash --targets=aarch64-apple-darwin
 #

pkgs/stdenv/darwin/test-bootstrap-tools.nix

@@ -55,7 +55,8 @@ derivation {
     # The stdenv bootstrap builds the SDK in the bootstrap. Use an existing SDK to test the tools.
     export SDKROOT='${apple-sdk.sdkroot}'
 
-    export flags="-idirafter $SDKROOT/usr/include --sysroot=$SDKROOT -L$SDKROOT/usr/lib -L$tools/lib -DTARGET_OS_IPHONE=0"
+    export resource_dir="$(echo "$tools"/lib/clang/*)" # Expand wildcard
+    export flags="-resource-dir=$resource_dir -idirafter $SDKROOT/usr/include --sysroot=$SDKROOT -L$SDKROOT/usr/lib -L$tools/lib -DTARGET_OS_IPHONE=0"
 
     export CPP="clang -E $flags"
     export CC="clang $flags"
@@ -77,7 +78,7 @@ derivation {
     # using -Wl,-flat_namespace is required to generate an error
     mkdir libtest/
     ln -s $tools/lib/libc++.dylib libtest/
-    clang++ -Wl,-flat_namespace -idirafter $SDKROOT/usr/include -isystem$tools/include/c++/v1 \
+    clang++ -Wl,-flat_namespace -resource-dir=$resource_dir -idirafter $SDKROOT/usr/include -isystem$tools/include/c++/v1 \
       --sysroot=$SDKROOT -L$SDKROOT/usr/lib  -L./libtest -L$PWD/libSystem-boot hello3.cc
 
     tar xvf ${hello.src}

pkgs/top-level/release.nix

@@ -22,7 +22,7 @@
   supportedSystems ? builtins.fromJSON (builtins.readFile ../../ci/supportedSystems.json),
   # The platform triples for which we build bootstrap tools.
   bootstrapConfigs ? [
-    "aarch64-apple-darwin"
+    "arm64-apple-darwin"
     "aarch64-unknown-linux-gnu"
     "aarch64-unknown-linux-musl"
     "i686-unknown-linux-gnu"