missing packaging dependency

[shinkuan]

Found this error when trying to build kanachan/Dockerfile.

This error happens when trying to install Apex:

kanachan/kanachan/Dockerfile

Line 31 in fd13033

MAX_JOBS=$(($(nproc) / 2)) python3 -m pip install -v --no-cache-dir --global-option="--cpp_ext" --global-option="--cuda_ext" ./; \

Someone already submit this issue two weeks ago at here.

After add --no-build-isolation to Dockerfile can successfully build kanachan.
MAX_JOBS=$(($(nproc) / 2)) python3 -m pip install -v --no-cache-dir --no-build-isolation --global-option="--cpp_ext" --global-option="--cuda_ext" ./; \