Leandro Nunes

Still broken for macOS Sierra. Changing `darwin` to `Darwin` fix the problem as reported by @franciozzy.

I've been testing this change with TensorFlow 2.9.1 update that is proposed in #12131, and these tests are passing, so I'm merging this change so that it doesn't go stale....

> @leandron when investigating the Python deps I also came across this bug. We currently build a tflite library from the tensorflow source, and in TF 2.7 the build system...

Yes. However it still requires the Docker images to have the updated TF for the whole CI. I generated a new set, and will make a new CI staging run...

@areusch just to update here as we're discussing, once this is merged, the PR that updates the Docker images, will need to update `task_config_build_cpu.sh` from: ``` echo set\(USE_TFLITE ON\) >>...

> lgtm once comments are addressed Thanks @driazati

@tvm-bot rerun

@tvm-bot rerun

> Looks good to me, just wanted to mention that this might break microTVM testing on hardware since RVM uses a different tensorflow version. If it does we need a...

@lhutton1 can you have another look on this one?