diff --git a/android/bazel.go b/android/bazel.go
index 9621f3e..ba29f6d 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -126,40 +126,21 @@
 )
 
 var (
-	// Do not write BUILD files for these directories
-	// NOTE: this is not recursive
-	bp2buildDoNotWriteBuildFileList = []string{
-		// Don't generate these BUILD files - because external BUILD files already exist
-		"external/boringssl",
-		"external/brotli",
-		"external/dagger2",
-		"external/flatbuffers",
-		"external/gflags",
-		"external/google-fruit",
-		"external/grpc-grpc",
-		"external/grpc-grpc/test/core/util",
-		"external/grpc-grpc/test/cpp/common",
-		"external/grpc-grpc/third_party/address_sorting",
-		"external/nanopb-c",
-		"external/nos/host/generic",
-		"external/nos/host/generic/libnos",
-		"external/nos/host/generic/libnos/generator",
-		"external/nos/host/generic/libnos_datagram",
-		"external/nos/host/generic/libnos_transport",
-		"external/nos/host/generic/nugget/proto",
-		"external/perfetto",
-		"external/protobuf",
-		"external/rust/cxx",
-		"external/rust/cxx/demo",
-		"external/ruy",
-		"external/tensorflow",
-		"external/tensorflow/tensorflow/lite",
-		"external/tensorflow/tensorflow/lite/java",
-		"external/tensorflow/tensorflow/lite/kernels",
-		"external/tflite-support",
-		"external/tinyalsa_new",
-		"external/wycheproof",
-		"external/libyuv",
+	// Keep any existing BUILD files (and do not generate new BUILD files) for these directories
+	bp2buildKeepExistingBuildFile = map[string]bool{
+		// This is actually build/bazel/build.BAZEL symlinked to ./BUILD
+		".":/*recrusive = */ false,
+
+		"build/bazel":/* recursive = */ true,
+		"build/pesto":/* recursive = */ true,
+
+		// external/bazelbuild-rules_android/... is needed by mixed builds, otherwise mixed builds analysis fails
+		// e.g. ERROR: Analysis of target '@soong_injection//mixed_builds:buildroot' failed
+		"external/bazelbuild-rules_android":/* recursive = */ true,
+
+		"prebuilts/clang/host/linux-x86":/* recursive = */ false,
+		"prebuilts/sdk":/* recursive = */ false,
+		"prebuilts/sdk/tools":/* recursive = */ false,
 	}
 
 	// Configure modules in these directories to enable bp2build_available: true or false by default.
@@ -218,6 +199,7 @@
 		// libcxx
 		"libBionicBenchmarksUtils", // cc_library_static, fatal error: 'map' file not found, from libcxx
 		"fmtlib",                   // cc_library_static, fatal error: 'cassert' file not found, from libcxx
+		"fmtlib_ndk",               // cc_library_static, fatal error: 'cassert' file not found
 		"libbase",                  // http://b/186826479, cc_library, fatal error: 'memory' file not found, from libcxx
 
 		// http://b/186024507: Includes errors because of the system_shared_libs default value.
@@ -229,6 +211,9 @@
 		"note_memtag_heap_async", // http://b/185127353: cc_library_static, error: feature.h not found
 		"note_memtag_heap_sync",  // http://b/185127353: cc_library_static, error: feature.h not found
 
+		"libjemalloc5",           // cc_library, ld.lld: error: undefined symbol: memset
+		"gwp_asan_crash_handler", // cc_library, ld.lld: error: undefined symbol: memset
+
 		// Tests. Handle later.
 		"libbionic_tests_headers_posix", // http://b/186024507, cc_library_static, sched.h, time.h not found
 		"libjemalloc5_integrationtest",
@@ -254,17 +239,12 @@
 	}
 
 	// Used for quicker lookups
-	bp2buildDoNotWriteBuildFile = map[string]bool{}
 	bp2buildModuleDoNotConvert  = map[string]bool{}
 	bp2buildCcLibraryStaticOnly = map[string]bool{}
 	mixedBuildsDisabled         = map[string]bool{}
 )
 
 func init() {
-	for _, moduleName := range bp2buildDoNotWriteBuildFileList {
-		bp2buildDoNotWriteBuildFile[moduleName] = true
-	}
-
 	for _, moduleName := range bp2buildModuleDoNotConvertList {
 		bp2buildModuleDoNotConvert[moduleName] = true
 	}
@@ -282,12 +262,21 @@
 	return bp2buildCcLibraryStaticOnly[ctx.Module().Name()]
 }
 
-func ShouldWriteBuildFileForDir(dir string) bool {
-	if _, ok := bp2buildDoNotWriteBuildFile[dir]; ok {
-		return false
-	} else {
+func ShouldKeepExistingBuildFileForDir(dir string) bool {
+	if _, ok := bp2buildKeepExistingBuildFile[dir]; ok {
+		// Exact dir match
 		return true
 	}
+	// Check if subtree match
+	for prefix, recursive := range bp2buildKeepExistingBuildFile {
+		if recursive {
+			if strings.HasPrefix(dir, prefix+"/") {
+				return true
+			}
+		}
+	}
+	// Default
+	return false
 }
 
 // MixedBuildsEnabled checks that a module is ready to be replaced by a