diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index ba9a1ed36..000000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,183 +0,0 @@
-name: CI
-
-on:
-  workflow_dispatch:
-  pull_request:
-  push:
-    branches: [master]
-
-jobs:
-
-  linux:
-
-    strategy:
-      fail-fast: false
-      matrix:
-        runs-on: [ubuntu-latest]
-        sys:
-        - {compiler: gcc, version: '11', name: c++17, flags: -DCPP17=ON}
-        - {compiler: clang, version: '15', name: assert, flags: -DXTENSOR_ENABLE_ASSERT=ON}
-        - {compiler: clang, version: '16', name: column-major, flags: -DDEFAULT_COLUMN_MAJOR=ON}
-        - {compiler: default, version: '', name: tbb, flags: -DXTENSOR_USE_TBB=ON -DTBB_INCLUDE_DIR=$CONDA_PREFIX/include -DTBB_LIBRARY=$CONDA_PREFIX/lib}
-        - {compiler: default, version: '', name: openmp, flags: -DXTENSOR_USE_OPENMP=ON}
-        - {compiler: default, version: '', name: noexcept, flags: -DXTENSOR_DISABLE_EXCEPTIONS=ON}
-        - {compiler: default, version: '', name: xsimd, flags: -DXTENSOR_USE_XSIMD=ON}
-        - {compiler: default, version: '', name: xsimd-tbb, flags: -DXTENSOR_USE_XSIMD=ON -DXTENSOR_USE_TBB=ON}
-
-    defaults:
-      run:
-        shell: bash -e -l {0}
-
-    name: ${{ matrix.runs-on }} • ${{ matrix.sys.compiler }}${{ matrix.sys.version }} - ${{ matrix.sys.name }}
-    runs-on: ${{ matrix.runs-on }}
-    steps:
-
-    - name: Setup GCC
-      if: ${{ matrix.sys.compiler == 'gcc' }}
-      run: |
-        echo "CC=gcc-${{ matrix.sys.version }}" >> $GITHUB_ENV
-        echo "CXX=g++-${{ matrix.sys.version }}" >> $GITHUB_ENV
-
-    - name: Setup clang
-      if: ${{ matrix.sys.compiler == 'clang' }}
-      run: |
-        LLVM_VERSION=${{ matrix.sys.version }}
-        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add - || exit 1
-        if [[ $LLVM_VERSION -ge 13 ]]; then
-          sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-$LLVM_VERSION main" || exit 1
-        else
-          sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal main" || exit 1
-        fi || exit 1
-        sudo apt-get update || exit 1
-        sudo apt-get --no-install-suggests --no-install-recommends install clang-$LLVM_VERSION || exit 1
-        sudo apt-get --no-install-suggests --no-install-recommends install g++-9 g++-9-multilib || exit 1
-        sudo ln -s /usr/include/asm-generic /usr/include/asm
-        CC=clang-$LLVM_VERSION
-        echo "CC=$CC" >> $GITHUB_ENV
-        CXX=clang++-$LLVM_VERSION
-        echo "CXX=$CXX" >> $GITHUB_ENV
-
-    - name: Checkout code
-      uses: actions/checkout@v3
-
-    - name: Set conda environment
-      uses: mamba-org/setup-micromamba@main
-      with:
-        environment-name: myenv
-        environment-file: environment-dev.yml
-        init-shell: bash
-        cache-downloads: true
-        create-args: |
-          ${{ (matrix.sys.name == 'tbb' || matrix.sys.name == 'xsimd-tbb' ) && 'tbb-devel' || '' }}
-
-    - name: Configure using CMake
-      run: cmake -Bbuild -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON ${{ matrix.sys.flags }}
-
-    - name: Install
-      working-directory: build
-      run: cmake --install .
-
-    - name: Build
-      working-directory: build
-      run: cmake --build . --target test_xtensor_lib --parallel 8
-
-    - name: Run tests
-      working-directory: build
-      run: ctest -R ^xtest$ --output-on-failure
-
-  macos:
-
-    strategy:
-      fail-fast: false
-      matrix:
-        runs-on: [macos-latest]
-
-    defaults:
-      run:
-        shell: bash -e -l {0}
-
-    name: ${{ matrix.runs-on }} • default - default
-    runs-on: ${{ matrix.runs-on }}
-    steps:
-
-    - name: Checkout code
-      uses: actions/checkout@v3
-
-    - name: Set conda environment
-      uses: mamba-org/setup-micromamba@main
-      with:
-        environment-name: myenv
-        environment-file: environment-dev.yml
-        init-shell: bash
-        cache-downloads: true
-
-    - name: Configure using CMake
-      run: cmake -Bbuild -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON
-
-    - name: Install
-      working-directory: build
-      run: cmake --install .
-
-    - name: Build
-      working-directory: build
-      run: cmake --build . --target test_xtensor_lib --parallel 8
-
-    - name: Run tests
-      working-directory: build
-      run: ctest -R ^xtest$ --output-on-failure
-
-  windows:
-
-    strategy:
-      fail-fast: false
-      matrix:
-        runs-on: [windows-latest]
-        sys:
-        - {compiler: default}
-        - {compiler: clang}
-
-    defaults:
-      run:
-        shell: bash -e -l {0}
-
-    name: ${{ matrix.runs-on }} • ${{ matrix.sys.compiler }} - default
-    runs-on: ${{ matrix.runs-on }}
-    steps:
-
-    - name: Setup MSVC
-      if: matrix.sys.compiler == 'default'
-      uses: ilammy/msvc-dev-cmd@v1
-
-    - name: Setup clang
-      if: matrix.sys.compiler == 'clang'
-      run: |
-        echo "CC=clang" >> $GITHUB_ENV
-        echo "CXX=clang++" >> $GITHUB_ENV
-
-    - name: Checkout code
-      uses: actions/checkout@v3
-
-    - name: Set conda environment
-      uses: mamba-org/setup-micromamba@main
-      with:
-        environment-name: myenv
-        environment-file: environment-dev.yml
-        init-shell: bash
-        cache-downloads: true
-        create-args: |
-          ninja
-
-    - name: Configure using CMake
-      run: cmake -Bbuild -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON -G Ninja
-
-    - name: Install
-      working-directory: build
-      run: cmake --install .
-
-    - name: Build
-      working-directory: build
-      run: cmake --build . --target test_xtensor_lib --parallel 8
-
-    - name: Run tests
-      working-directory: build
-      run: ctest -R ^xtest$ --output-on-failure
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
new file mode 100644
index 000000000..97d8cb094
--- /dev/null
+++ b/.github/workflows/linux.yml
@@ -0,0 +1,91 @@
+name: Linux
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [master]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
+  cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -e -l {0}
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    name: ${{ matrix.sys.compiler }} ${{ matrix.sys.version }} - ${{ matrix.sys.name }}
+    strategy:
+      fail-fast: false
+      matrix:
+        sys:
+        - {compiler: clang, version: '15', name: assert, flags: -DXTENSOR_ENABLE_ASSERT=ON}
+        - {compiler: clang, version: '16', name: column-major, flags: -DDEFAULT_COLUMN_MAJOR=ON}
+        - {compiler: gcc, version: '8', name: openmp, flags: -DXTENSOR_USE_OPENMP=ON}
+        - {compiler: gcc, version: '9', name: noexcept, flags: -DXTENSOR_DISABLE_EXCEPTIONS=ON}
+        - {compiler: gcc, version: '10', name: xsimd, flags: -DXTENSOR_USE_XSIMD=ON}
+        - {compiler: gcc, version: '11', name: c++17, flags: -DCPP17=ON}
+        - {compiler: gcc, version: '11', name: xsimd-tbb, flags: -DXTENSOR_USE_XSIMD=ON -DXTENSOR_USE_TBB=ON}
+        - {compiler: gcc, version: '11', name: tbb, flags: -DXTENSOR_USE_TBB=ON -DTBB_INCLUDE_DIR=$CONDA_PREFIX/include -DTBB_LIBRARY=$CONDA_PREFIX/lib}
+
+    steps:
+
+    - name: Setup GCC
+      if: ${{ matrix.sys.compiler == 'gcc' }}
+      run: |
+        GCC_VERSION=${{ matrix.sys.version }}
+        sudo apt-get update
+        sudo apt-get --no-install-suggests --no-install-recommends install g++-$GCC_VERSION
+        CC=gcc-$GCC_VERSION
+        echo "CC=$CC" >> $GITHUB_ENV
+        CXX=g++-$GCC_VERSION
+        echo "CXX=$CXX" >> $GITHUB_ENV
+
+    - name: Setup clang
+      if: ${{ matrix.sys.compiler == 'clang' }}
+      run: |
+        LLVM_VERSION=${{ matrix.sys.version }}
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add - || exit 1
+        if [[ $LLVM_VERSION -ge 13 ]]; then
+          sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-$LLVM_VERSION main" || exit 1
+        else
+          sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal main" || exit 1
+        fi || exit 1
+        sudo apt-get update || exit 1
+        sudo apt-get --no-install-suggests --no-install-recommends install clang-$LLVM_VERSION || exit 1
+        sudo apt-get --no-install-suggests --no-install-recommends install g++-9 g++-9-multilib || exit 1
+        sudo ln -s /usr/include/asm-generic /usr/include/asm
+        CC=clang-$LLVM_VERSION
+        echo "CC=$CC" >> $GITHUB_ENV
+        CXX=clang++-$LLVM_VERSION
+        echo "CXX=$CXX" >> $GITHUB_ENV
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set conda environment
+      uses: mamba-org/setup-micromamba@main
+      with:
+        environment-name: myenv
+        environment-file: environment-dev.yml
+        init-shell: bash
+        cache-downloads: true
+        create-args: |
+          ${{ (matrix.sys.name == 'tbb' || matrix.sys.name == 'xsimd-tbb' ) && 'tbb-devel' || '' }}
+
+    - name: Configure using CMake
+      #      env:
+      #        CC: ${{ env.CC }}
+      #        CXX: ${{ env.CXX }}
+      run: cmake -G Ninja -Bbuild -DCMAKE_C_COMPILER=$CC -DCMAKE_CXX_COMPILER=$CXX -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON ${{ matrix.sys.flags }}
+
+    - name: Install
+      working-directory: build
+      run: cmake --install .
+
+    - name: Build
+      working-directory: build
+      run: cmake --build . --target test_xtensor_lib --parallel 8
+
+    - name: Run tests
+      working-directory: build
+      run: ctest -R ^xtest$ --output-on-failure
diff --git a/.github/workflows/osx.yml b/.github/workflows/osx.yml
new file mode 100644
index 000000000..55b3f816c
--- /dev/null
+++ b/.github/workflows/osx.yml
@@ -0,0 +1,50 @@
+name: OSX
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [master]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
+  cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -e -l {0}
+jobs:
+  build:
+    runs-on: macos-${{ matrix.os }}
+    name: macos-${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+        - 11
+        - 12
+
+    steps:
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set conda environment
+      uses: mamba-org/setup-micromamba@main
+      with:
+        environment-name: myenv
+        environment-file: environment-dev.yml
+        init-shell: bash
+        cache-downloads: true
+
+    - name: Configure using CMake
+      run: cmake -Bbuild -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON
+
+    - name: Install
+      working-directory: build
+      run: cmake --install .
+
+    - name: Build
+      working-directory: build
+      run: cmake --build . --target test_xtensor_lib --parallel 8
+
+    - name: Run tests
+      working-directory: build
+      run: ctest -R ^xtest$ --output-on-failure
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
new file mode 100644
index 000000000..133e6c7c5
--- /dev/null
+++ b/.github/workflows/windows.yml
@@ -0,0 +1,63 @@
+name: Windows
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [master]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
+  cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -e -l {0}
+jobs:
+  build:
+    runs-on: ${{ matrix.runs-on }}
+    name: ${{ matrix.sys.compiler }}
+    strategy:
+      fail-fast: false
+      matrix:
+        runs-on: [windows-latest]
+        sys:
+        - {compiler: default}
+        - {compiler: clang}
+
+    steps:
+
+    - name: Setup MSVC
+      if: matrix.sys.compiler == 'default'
+      uses: ilammy/msvc-dev-cmd@v1
+
+    - name: Setup clang
+      if: matrix.sys.compiler == 'clang'
+      run: |
+        echo "CC=clang" >> $GITHUB_ENV
+        echo "CXX=clang++" >> $GITHUB_ENV
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set conda environment
+      uses: mamba-org/setup-micromamba@main
+      with:
+        environment-name: myenv
+        environment-file: environment-dev.yml
+        init-shell: bash
+        cache-downloads: true
+        create-args: |
+          ninja
+
+    - name: Configure using CMake
+      run: cmake -Bbuild -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON -G Ninja
+
+    - name: Install
+      working-directory: build
+      run: cmake --install .
+
+    - name: Build
+      working-directory: build
+      run: cmake --build . --target test_xtensor_lib --parallel 8
+
+    - name: Run tests
+      working-directory: build
+      run: ctest -R ^xtest$ --output-on-failure
diff --git a/environment-dev.yml b/environment-dev.yml
index 81dd49ab0..acfeaa22d 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -8,3 +8,4 @@ dependencies:
 - nlohmann_json
 - doctest=2.4.7
 - pre-commit
+- ninja