Apply classic solver to M1 builds

Author: atalman

.github/workflows/build_conda_macos.yml

@@ -187,9 +187,10 @@ jobs:
           ${CONDA_RUN_SMOKE} conda install \
             --quiet \
             --yes \
-            -c "${CONDA_LOCAL_CHANNEL}" \
             -c pytorch-${CHANNEL} \
-            "${PACKAGE_NAME}"
+            -c "${CONDA_LOCAL_CHANNEL}" \
+            "distr::"${PACKAGE_NAME}"" \
+            "-—solver=classic"
 
           if [[ ! -f "${{ inputs.repository }}"/${SMOKE_TEST_SCRIPT} ]]; then
             echo "${{ inputs.repository }}/${SMOKE_TEST_SCRIPT} not found"