Remove llvm15 for macos14

Author: Bill-hbrhbr

.github/workflows/unit-tests.yaml

@@ -43,10 +43,9 @@ jobs:
         run: "npm install -g @go-task/cli"
 
       - if: "'macos-14' == matrix.os"
-        name: "Install macOS 14 deps: coreutils (for md5sum) and LLVM Clang 15 (for Velox)"
+        name: "Install macOS 14 deps: coreutils (for md5sum)"
         run: |-
           brew install coreutils
-          brew install llvm@15
 
       - name: "Run unit tests and examples"
         # Currently unit tests rely on cassert and fail to compile in release mode.

cmake/Toolchains/utils.cmake

@@ -11,7 +11,7 @@ function(setup_toolchains)
             OUTPUT_VARIABLE MACOS_VERSION
             OUTPUT_STRIP_TRAILING_WHITESPACE
         )
-        if("${MACOS_VERSION}" VERSION_LESS "15")
+        if("${MACOS_VERSION}" VERSION_LESS "14")
             set(CMAKE_TOOLCHAIN_FILE
                 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Toolchains/llvm-clang-15-toolchain.cmake"
                 CACHE FILEPATH