use dedicated build environments in Windows workflow

Author: ndgrigorian

.github/workflows/conda-package-cf.yml

@@ -182,12 +182,9 @@ jobs:
 
       - uses: conda-incubator/setup-miniconda@fc2d68f6413eb2d87b895e92f8584b5b94a10167 # v3.3.0
         with:
-          miniforge-variant: Miniforge3
           miniforge-version: latest
-          auto-activate: true
-          activate-environment: base
+          activate-environment: build
           channels: conda-forge
-          conda-remove-defaults: true
           python-version: ${{ matrix.python }}
 
       - name: Install conda-build
@@ -213,7 +210,7 @@ jobs:
       - name: Store conda paths as envs
         shell: bash -l {0}
         run: |
-          echo "CONDA_BLD=$CONDA/conda-bld/win-64/" | tr "\\\\" '/' >> "$GITHUB_ENV"
+          echo "CONDA_BLD=$CONDA_PREFIX/conda-bld/win-64/" | tr "\\\\" '/' >> "$GITHUB_ENV"
 
       - name: Upload artifact
         uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
@@ -249,7 +246,6 @@ jobs:
         with:
           miniforge-version: latest
           channels: conda-forge
-          conda-remove-defaults: true
           activate-environment: ${{ env.TEST_ENV_NAME }}
           python-version: ${{ matrix.python }}
 

.github/workflows/conda-package.yml

@@ -171,12 +171,9 @@ jobs:
 
       - uses: conda-incubator/setup-miniconda@fc2d68f6413eb2d87b895e92f8584b5b94a10167 # v3.3.0
         with:
-          miniforge-variant: Miniforge3
           miniforge-version: latest
-          auto-activate: true
-          activate-environment: base
+          activate-environment: build
           channels: conda-forge
-          conda-remove-defaults: true
           python-version: ${{ matrix.python }}
 
       - name: Install conda-build
@@ -204,7 +201,7 @@ jobs:
       - name: Store conda paths as envs
         shell: bash -l {0}
         run: |
-          echo "CONDA_BLD=$CONDA/conda-bld/win-64/" | tr "\\\\" '/' >> "$GITHUB_ENV"
+          echo "CONDA_BLD=$CONDA_PREFIX/conda-bld/win-64/" | tr "\\\\" '/' >> "$GITHUB_ENV"
 
       - name: Upload artifact
         uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
@@ -239,7 +236,6 @@ jobs:
         with:
           miniforge-version: latest
           channels: conda-forge
-          conda-remove-defaults: true
           activate-environment: ${{ env.TEST_ENV_NAME }}
           python-version: ${{ matrix.python }}