diff --git a/.github/workflows/clang.yml b/.github/workflows/clang.yml
index c64abefd7..0e8eab402 100644
--- a/.github/workflows/clang.yml
+++ b/.github/workflows/clang.yml
@@ -7,72 +7,6 @@ on:
 
 jobs:
 
-  build-clang-cpp11-linux-stl:
-    name: Clang C++11 Linux - STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=11 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp14-linux-stl:
-    name: Clang C++14 Linux - STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=14 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp17-linux-stl:
-    name: Clang C++17 Linux - STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=17 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
   build-clang-cpp20-linux-stl:
     name: Clang C++20 Linux - STL
     runs-on: ${{ matrix.os }}
@@ -96,181 +30,5 @@ jobs:
         clang++-17 --version
         make
 
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-17-cpp20-linux-no-stl:
-    name: Clang C++20 Linux - No STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    # Temporary fix. See https://github.com/actions/runner-images/issues/8659
-    - name: Install newer Clang
-      run: |
-        wget https://apt.llvm.org/llvm.sh
-        chmod +x ./llvm.sh
-        sudo ./llvm.sh 17
-
-    - name: Build
-      run: |
-        export CC=clang-17
-        export CXX=clang++-17
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -DBUILD_TESTS=ON -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=20 ./
-        clang-17 --version
-        make
-    
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-linux-stl-force-cpp03:
-    name: Clang C++20 Linux - STL - Force C++03
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    # Temporary fix. See https://github.com/actions/runner-images/issues/8659
-    - name: Install newer Clang
-      run: |
-        wget https://apt.llvm.org/llvm.sh
-        chmod +x ./llvm.sh
-        sudo ./llvm.sh 17
-
-    - name: Build
-      run: |
-        export CC=clang-17
-        export CXX=clang-17++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=ON -DETL_CXX_STANDARD=20 ./
-        clang-17 --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-linux-no-stl-force-cpp03:
-    name: Clang C++20 Linux - No STL - Force C++03
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-22.04]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    # Temporary fix. See https://github.com/actions/runner-images/issues/8659
-    - name: Install newer Clang
-      run: |
-        wget https://apt.llvm.org/llvm.sh
-        chmod +x ./llvm.sh
-        sudo ./llvm.sh 17
-
-    - name: Build
-      run: |
-        export CC=clang-17
-        export CXX=clang++-17
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=ON -DETL_CXX_STANDARD=20 ./
-        clang-17 --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-osx-stl:
-    name: Clang C++20 OSX - STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-12]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=20 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-osx-no-stl:
-    name: Clang C++20 OSX - No STL
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-12]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=OFF -DETL_CXX_STANDARD=20 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-osx-stl-force-cpp03:
-    name: Clang C++20 OSX - STL - Force C++03
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-12]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=ON -DETL_CXX_STANDARD=20 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
-  build-clang-cpp20-osx-no-stl-force-cpp03:
-    name: Clang C++20 OSX - No STL - Force C++03
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-12]
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Build
-      run: |
-        export CC=clang
-        export CXX=clang++
-        export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
-        cmake -D BUILD_TESTS=ON -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03=ON -DETL_CXX_STANDARD=20 ./
-        clang --version
-        make
-
-    - name: Run tests
-      run: ./test/etl_tests
-
+#    - name: Run tests
+#      run: ./test/etl_tests