Pipy validation workflow (#1507)

Author: atalman

.github/scripts/validate_pipy.sh

@@ -1,20 +1,18 @@
 conda create -yp ${ENV_NAME}_pypi python=${MATRIX_PYTHON_VERSION} numpy ffmpeg
-conda activate ${ENV_NAME}_pypi
 
 TEST_SUFFIX=""
 if [[ ${TORCH_ONLY} == 'true' ]]; then
     TEST_SUFFIX=" --package torchonly"
-    pip3 install --pre torch --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}_pypi_cudnn"
+    conda run -p ${ENV_NAME}_pypi pip install --pre torch --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}_pypi_cudnn"
 else
     if [[ ${MATRIX_CHANNEL} != "release" ]]; then
-        pip3 install --pre torch --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}_pypi_cudnn"
-        pip3 install --pre torchvision torchaudio --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}"
+        conda run -p ${ENV_NAME}_pypi pip install --pre torch --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}_pypi_cudnn"
+        conda run -p ${ENV_NAME}_pypi pip install --pre torchvision torchaudio --index-url "https://download.pytorch.org/whl/${MATRIX_CHANNEL}/${MATRIX_DESIRED_CUDA}"
     else
-        pip3 install torch torchvision torchaudio
+        conda run -p ${ENV_NAME}_pypi pip install torch torchvision torchaudio
     fi
 fi
 
-python ./test/smoke_test/smoke_test.py ${TEST_SUFFIX} --runtime-error-check disabled
-
+conda run -p ${ENV_NAME}_pypi python ./test/smoke_test/smoke_test.py ${TEST_SUFFIX} --runtime-error-check disabled
 conda deactivate
 conda env remove -p ${ENV_NAME}_pypi