Specify MSVC architecture using presets

Shortens CI command lines slightly,
and documents the requirement.

.github/workflows/create-release-artifacts.yml

@@ -23,10 +23,8 @@ jobs:
         include:
           - bits: 32
             arch: x86
-            platform: Win32
           - bits: 64
             arch: x86_x64
-            platform: x64
       fail-fast: false
     steps:
       - name: Get version from tag
@@ -43,7 +41,7 @@ jobs:
         # We instruct CMake to download and build third-party projects outside of our source tree,
         # otherwise they can trigger `-Werror=dev` (from the `develop` preset).
         run: |
-          cmake -S . -B build -A ${{ matrix.platform }} -DFETCHCONTENT_BASE_DIR="$TEMP/cmake-deps" -DBISON_EXECUTABLE=bison/win_bison.exe
+          cmake -S . -B build --preset msvc${{ matrix.bits }} -DFETCHCONTENT_BASE_DIR="$TEMP/cmake-deps" -DBISON_EXECUTABLE=bison/win_bison.exe
           cmake --build build
           cmake --install build --config Release --prefix install_dir --verbose
       - name: Package binaries

.github/workflows/testing.yml

@@ -150,10 +150,8 @@ jobs:
         include:
           - bits: 32
             arch: x86
-            platform: Win32
           - bits: 64
             arch: x86_x64
-            platform: x64
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
@@ -166,7 +164,7 @@ jobs:
         # We instruct CMake to download and build third-party projects outside of our source tree,
         # otherwise they can trigger `-Werror=dev` (from the `develop` preset).
         run: | # ASan seems to be broken on Windows, so we disable it.
-          cmake -S . -B build -A ${{ matrix.platform }} --preset develop -DFETCHCONTENT_BASE_DIR="$TEMP/cmake-deps" -DBISON_EXECUTABLE=bison/win_bison.exe -DSANITIZERS=OFF
+          cmake -S . -B build --preset develop-msvc${{ matrix.bits }} -DFETCHCONTENT_BASE_DIR="$TEMP/cmake-deps" -DBISON_EXECUTABLE=bison/win_bison.exe -DSANITIZERS=OFF
           cmake --build build
           cmake --install build --config Debug --prefix install_dir --verbose
       - name: Package binaries

CMakePresets.json

@@ -12,6 +12,25 @@
 			},
 			"warnings": { "uninitialized": true },
 			"errors": { "dev": true }
+		},
+		{
+			"name": "develop-msvc32",
+			"inherits": ["develop", "msvc32"]
+		},
+		{
+			"name": "develop-msvc64",
+			"inherits": ["develop", "msvc64"]
+		},
+
+		{
+			"name": "msvc32",
+			"description": "Flags for building 32-bit executables with MSVC",
+			"architecture": "Win32"
+		},
+		{
+			"name": "msvc64",
+			"description": "Flags for building 64-bit executables with MSVC",
+			"architecture": "x64"
 		}
 	]
 }