diff --git a/pkgs/by-name/tr/triton-llvm/package.nix b/pkgs/by-name/tr/triton-llvm/package.nix
index a8e8f0d96259..9f75c47099ec 100644
--- a/pkgs/by-name/tr/triton-llvm/package.nix
+++ b/pkgs/by-name/tr/triton-llvm/package.nix
@@ -128,6 +128,9 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeBool "LLVM_INCLUDE_DOCS" (buildDocs || buildMan))
     (lib.cmakeBool "MLIR_INCLUDE_DOCS" (buildDocs || buildMan))
     (lib.cmakeBool "LLVM_BUILD_DOCS" (buildDocs || buildMan))
+    # It's tempting to set BUILD_SHARED_LIBS, which saves far more space
+    # but currently segfaults in keras's test suite. More work needed.
+    (lib.cmakeBool "LLVM_TOOL_LLVM_DRIVER_BUILD" true) # Save space by using busybox style tool binary
     # Way too slow, only uses one core
     # (lib.cmakeBool "LLVM_ENABLE_DOXYGEN" (buildDocs || buildMan))
     (lib.cmakeBool "LLVM_ENABLE_SPHINX" (buildDocs || buildMan))