Clang-Tidy breaks with standard C++20 modules

CMakeLists.txt

cmake_minimum_required(VERSION 3.26)

# Required by CMake 3.26 to enable standard C++20 module support
set(CMAKE_EXPERIMENTAL_CXX_MODULE_DYNDEP 1)
set(CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API 2182bf5c-ef0d-489a-91da-49dbc3090d2a)

# Generate compile_commands.json
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Comment out the following line to disable clang-tidy; only works with Ninja. 
# Breaks compilation when uncommented, OK when commented out. 
set(CMAKE_CXX_CLANG_TIDY clang-tidy -checks=-*,readability-*;--extra-arg=-Xclang=-fprebuilt-module-path=${CMAKE_BINARY_DIR}/CMakeFiles/test_lib.dir/;-p=${CMAKE_BINARY_DIR})

project(test LANGUAGES CXX)

add_library(test_lib STATIC)
target_sources(test_lib
    PRIVATE
        FILE_SET CXX_MODULES
            BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}
            FILES
                test.cppm)

target_compile_features(test_lib PUBLIC cxx_std_20)

add_executable(test main.cpp)
target_compile_features(test PUBLIC cxx_std_20)
target_link_libraries(test PRIVATE test_lib)

CMakePresets.json

{
    "version": 3,
    "cmakeMinimumRequired": {
        "major": 3,
        "minor": 26,
        "patch": 0
    },
    "configurePresets": [
        {
            "name": "Ninja",
            "generator": "Ninja",
            "binaryDir": "${sourceDir}/build",
            "cacheVariables": {
                "CMAKE_CXX_COMPILER": "cl.exe"
            },
            "architecture": {
                "value": "x64",
                "strategy": "external"
            }
        },
        {
            "name": "MSBuild",
            "generator": "Visual Studio 17 2022",
            "binaryDir": "${sourceDir}/build",
            "cacheVariables": {
                "CMAKE_CXX_COMPILER": "cl.exe"
            },
            "architecture": {
                "value": "x64",
                "strategy": "external"
            }
        }
    ],
    "buildPresets": [
        {
            "name": "Ninja",
            "configurePreset": "Ninja"
        },
        {
            "name": "MSBuild",
            "configurePreset": "MSBuild"
        }
    ]
}

main.cpp

import test;

auto main() -> int {
  return t::f();
}

test.cppm

export module test;

export namespace t
{
auto f() -> int { return 1 + 5; }
}