Fixed Windows build

Author: JohanMabille

.github/workflows/windows.yml

@@ -22,13 +22,21 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Set conda environment
-      uses: mamba-org/setup-micromamba@v1
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: environment-dev.yml
         cache-environment: true
 
     - name: Configure using CMake
-      run: cmake -Bbuild -DXTENSOR_INSTALL_R_PACKAGES=OFF -G "MinGW Makefiles" -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DDOWNLOAD_GTEST=ON $(Build.SourcesDirectory)
+      run: |
+        cmake -Bbuild \
+          -DXTENSOR_INSTALL_R_PACKAGES=OFF \
+          -DCMAKE_C_COMPILER=$CC \
+          -DCMAKE_CXX_COMPILER=$CXX \
+          -G "MinGW Makefiles" \
+          -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX \
+          -DDOWNLOAD_GTEST=ON \
+          $(Build.SourcesDirectory)
 
     - name: Install
       working-directory: build