diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4347755..c58784d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -207,39 +207,42 @@ jobs:
         Add-Content "$env:GITHUB_ENV" 'EnforceProcessCountAcrossBuilds=true'
 
     - name: Configure preset
-      if: matrix.os != 'windows-2022'
-      shell: pwsh
-      run: cmake "--preset=ci-$("${{ matrix.os }}".split("-")[0])"
-        -D BUILD_SHARED_LIBS=${{ matrix.shared }}
-
-    - name: Configure on windows
-      if: matrix.os == 'windows-2022'
-      shell: pwsh
-      run: cmake -G "Visual Studio 17 2022" -S . -B build -D CMAKE_BUILD_TYPE=Release
-        -D CMAKE_INSTALL_PREFIX=$(Get-Location)/stagedir -D BUILD_SHARED_LIBS=${{ matrix.shared }}
-
-    - name: Setup PATH
-      if: matrix.os == 'windows-2022' && matrix.type == 'shared'
-      run: Add-Content "$env:GITHUB_PATH" "$(Get-Location)\build\Release"
-
-    - name: Build
-      run: cmake --build build --config Release -j 2
-
-    - name: Install
-      run: cmake --install build --config Release --prefix stagedir
-
-    - name: Test
-      working-directory: build
-      run: ctest --output-on-failure --no-tests=error -C Release -j 2
-
-    - name: TestInstalledVersion
-      if: matrix.os != 'windows-2022'
+      # if: matrix.os != 'windows-2022'
+      shell: bash
       run: |
-        cmake -B example/build -S example -G Ninja -D CMAKE_BUILD_TYPE=Release \
-            -D "CMAKE_PREFIX_PATH=$PWD/stagedir;$PWD/conan" \
-            # --toolchain "$PWD/conan/conan_toolchain.cmake"
-        ninja -C example/build
-        ninja -C example/build test
+        export hostSystemName=$("${{ matrix.os }}".split("-")[0])
+        uname || echo ${hostSystemName}
+        perl -p -e "s/<hostSystemName>/${hostSystemName}/g;" .CMakeUserPresets.json > CMakeUserPresets.json
+        cmake --workflow --preset=dev  # XXX "--preset=ci-$("${{ matrix.os }}".split("-")[0])"
+
+    # - name: Configure on windows
+    #   if: matrix.os == 'windows-2022'
+    #   shell: pwsh
+    #   run: cmake -G "Visual Studio 17 2022" -S . -B build -D CMAKE_BUILD_TYPE=Release
+    #     -D CMAKE_INSTALL_PREFIX=$(Get-Location)/stagedir -D BUILD_SHARED_LIBS=${{ matrix.shared }}
+
+    # - name: Setup PATH
+    #   if: matrix.os == 'windows-2022' && matrix.type == 'shared'
+    #   run: Add-Content "$env:GITHUB_PATH" "$(Get-Location)\build\Release"
+
+    # - name: Build
+    #   run: cmake --build build --config Release -j 2
+
+    # - name: Install
+    #   run: cmake --install build --config Release --prefix stagedir
+
+    # - name: Test
+    #   working-directory: build
+    #   run: ctest --output-on-failure --no-tests=error -C Release -j 2
+
+    # - name: TestInstalledVersion
+    #   if: matrix.os != 'windows-2022'
+    #   run: |
+    #     cmake -B example/build -S example -G Ninja -D CMAKE_BUILD_TYPE=Release \
+    #         -D "CMAKE_PREFIX_PATH=$PWD/stagedir;$PWD/conan" \
+    #         # --toolchain "$PWD/conan/conan_toolchain.cmake"
+    #     ninja -C example/build
+    #     ninja -C example/build test
 
   docs:
     # Deploy docs only when builds succeed
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..dcebc89
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "cmake/WindowsToolchain"]
+	path = cmake/WindowsToolchain
+	url = https://github.com/MarkSchofield/WindowsToolchain.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45fe7cf..e650c3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,8 +17,6 @@ endif()
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN TRUE)
 
-include(cmake/CPM.cmake)
-
 if(PROJECT_IS_TOP_LEVEL)
   include(cmake/AddUninstallTarget.cmake)
   include(cmake/lint-targets.cmake)
@@ -37,6 +35,7 @@ endmacro()
 #########################################################################
 # cmake-format: off
 
+# include(cmake/CPM.cmake)
 # instead of find_package(fmt REQUIRED)
 # cpmaddpackage(
 #   NAME fmt
@@ -59,8 +58,6 @@ target_sources(Algo
     FILES
       algo-interface.cppm
 )
-# TODO(CK): target_link_libraries(Algo PRIVATE fmt::fmt)
-# target_link_libraries(Algo PRIVATE $<BUILD_INTERFACE:fmt::fmt-header-only>)
 
 # CMake requires the language standard to be specified as compile feature
 # when a target provides C++23 modules and the target will be installed
@@ -69,7 +66,6 @@ target_compile_features(Algo PUBLIC cxx_std_23)
 include(GenerateExportHeader)
 generate_export_header(Algo
   CUSTOM_CONTENT_FROM_VARIABLE
-  # XXX pragma_suppress_c4251
 )
 target_sources(Algo
   PUBLIC
diff --git a/CMakePresets.json b/CMakePresets.json
index f56cf1d..0fb82bf 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -42,8 +42,7 @@
       "hidden": true,
       "cacheVariables": {
         "CMAKE_CONFIGURATION_TYPES": "RelWithDebInfo;Release;Debug",
-        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/conan/conan_toolchain.cmake",
-        "CMAKE_POLICY_DEFAULT_CMP0091": "NEW"
+        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/conan/conan_toolchain.cmake"
       }
     },
     {
@@ -114,6 +113,7 @@
     {
       "name": "ci-linux",
       "generator": "Ninja",
+      "description": "This build is only available on Linux",
       "hidden": true,
       "inherits": [
         "flags-linux",
@@ -126,6 +126,7 @@
     {
       "name": "ci-darwin",
       "generator": "Ninja",
+      "description": "This build is only available on Darwin",
       "hidden": true,
       "inherits": [
         "flags-darwin",
@@ -140,11 +141,14 @@
       "inherits": [
         "ci-std"
       ],
-      "generator": "Visual Studio 17 2022",
-      "architecture": "x64",
+      "toolchainFile": "cmake/WindowsToolchain/Windows.MSVC.toolchain.cmake",
+      "generator": "Ninja Multi-Config",
+      "description": "This build is only available on Windows",
       "hidden": true,
+      "architecture": "x64",
       "cacheVariables": {
-        "CMAKE_BUILD_TYPE": "Release"
+        "CMAKE_BUILD_TYPE": "Release",
+        "CMAKE_SYSTEM_PROCESSOR": "AMD64"
       },
       "condition": {
         "type": "equals",
@@ -156,6 +160,7 @@
       "name": "coverage-linux",
       "binaryDir": "${sourceDir}/build/coverage",
       "inherits": "ci-linux",
+      "description": "This build is only available on Linux",
       "hidden": true,
       "cacheVariables": {
         "ENABLE_COVERAGE": true,
@@ -171,6 +176,7 @@
       "name": "coverage-darwin",
       "binaryDir": "${sourceDir}/build/coverage",
       "inherits": "ci-darwin",
+      "description": "This build is only available on Darwin",
       "hidden": true,
       "cacheVariables": {
         "ENABLE_COVERAGE": true,
@@ -199,6 +205,7 @@
         "ci-linux",
         "dev-mode"
       ],
+      "description": "This build is only available on Linux",
       "cacheVariables": {
         "CMAKE_SKIP_INSTALL_RULES": true,
         "CMAKE_BUILD_TYPE": "Sanitize",
diff --git a/cmake/WindowsToolchain b/cmake/WindowsToolchain
new file mode 160000
index 0000000..b44662d
--- /dev/null
+++ b/cmake/WindowsToolchain
@@ -0,0 +1 @@
+Subproject commit b44662d3e3fc1a4375e10a856ce098fc1507db1c