The error was

2021-04-19T23:17:03.5191120Z CMake Error at cmake/Findtensorflow.cmake:45 (message):
2021-04-19T23:17:03.5195290Z Not found 'tensorflow/core/public/session.h' directory in path
2021-04-19T23:17:03.5202627Z '/home/conda/feedstock_root/build_artifacts/deepmd-kit_1618873830865/h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold/lib/python3.8/site-packages/tensorflow;/home/conda/feedstock_root/build_artifacts/deepmd-kit_1618873830865/h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold/lib/python3.8/site-packages/tensorflow/../tensorflow_core;/home/conda/feedstock_root/build_artifacts/deepmd-kit_1618873830865/h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold/lib/python3.8/site-packages/tensorflow;/home/conda/feedstock_root/build_artifacts/deepmd-kit_1618873830865/h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold/lib/python3.8/site-packages/tensorflow/../tensorflow_core;/usr/;/usr/local/'
2021-04-19T23:17:03.5208133Z You can manually set the tensorflow install path by -DTENSORFLOW_ROOT
2021-04-19T23:17:03.5212224Z Call Stack (most recent call first):
2021-04-19T23:17:03.5216800Z CMakeLists.txt:50 (find_package)

This PR should also be cherry-picked to r1.2 branch.

Does this change compatible with older versions of TF?

Does this change compatible with older versions of TF?

This has nothing to do with TF versions. See https://github.com/conda-forge/tensorflow-feedstock/blob/40db5f43756877bea9e0dd2685cd5683b6527904/recipe/build.sh#L30, and here protobuf will be an external library, and will not built by bazel or packaged into the TF package. (It's used to reduce the build time)

In fact, I think we don't need libprotobuf headers to build python package, is it correct?

In fact, I think we don't need libprotobuf headers to build python package, is it correct?

You are right