ninja: Entering directory `out/gn'
[1/954] ACTION //clang-tools-extra/clang-tidy:clang-tidy-config(//llvm/utils/gn/build/toolchain:unix)
FAILED: gen/clang-tools-extra/clang-tidy/clang-tidy-config.h 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o gen/clang-tools-extra/clang-tidy/clang-tidy-config.h ../../clang-tools-extra/clang-tidy/clang-tidy-config.h.cmake CLANG_TIDY_ENABLE_STATIC_ANALYZER=1
Traceback (most recent call last):
  File "/Users/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 122, in <module>
    sys.exit(main())
  File "/Users/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 75, in main
    if values[var] == "0":
KeyError: 'CLANG_TIDY_ENABLE_QUERY_BASED_CUSTOM_CHECKS'
[2/954] AR lib/libLLVMTransformUtils.a
[3/954] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAG.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.