Dear all

trying to build the milvus_cli on >= rhel9.4 on power.
yes conda builds for an older version, but i need milvus version2 and >= python3.11
pip fails with the grpcio wheel build. Uses boringssl
2025-11-12T17:09:14,369   third_party/boringssl-with-bazel/src/include/openssl/target.h:74:2: error: #error "Unknown target CPU"
2025-11-12T17:09:14,370      74 | #error "Unknown target CPU"
switch to openssl
DgRPC_SSL_PROVIDER=openssl
GRPC_PYTHON_BUILD_SYSTEM_OPENSSL=true
gets rid of the Unknown target CPU error but eventually fails the build.

whether i use 
pip install torch  seqeval accelerate pymilvus sentence-transformers transformers langchain  numPy
or just
pip install --no-cache-dir --force-reinstall milvus_cli
in the VM or in a venv. still fails,

error below
Successfully built pandas numpy
Failed to build grpcio
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> grpcio

if i force grpcio reinstall, no cache, it builds on its own , the subsequent build of milvus_cli also works , but execution of milvus_cli is broken.
 
Has anyone built this successfully on linux on power for milvus v2 ?
Can anyone please help in this process?

Thanks

Ian

Resolved

python -m venv my_vdev
source my_vdev/bin/activate
(my_vdev)[]$ sudo dnf install python3.11-pip
(my_vdev)[]$ sudo dnf groupinstall "development tools"
(my_vdev)[]$ sudo dnf install python3.11-devel
(my_vdev)[]$ sudo dnf install gcc-gfortran
(my_vdev)[]$ sudo dnf install openblas-devel
(my_vdev)[]$ sudo dnf install libjpeg-turbo-devel
(my_vdev)[]$ sudo dnf install gcc openssl-devel bzip2-devel libffi-devel zlib-devel xz-devel readline-devel sqlite-devel tk-devel gdbm-devel libuuid-devel ncurses-devel
(my_vdev)[]$ sudo dnf install cmake
(my_vdev)[]$ pip install --upgrade pip
(my_vdev)[]$ pip install --upgrade setuptools
(my_vdev)[]$ pip config set global.extra-index-url  https://wheels.developerfirst.ibm.com/ppc64le/linux
(my_vdev)[]$ pip install --no-cache-dir --force-reinstall wheel
(my_vdev)[]$ export GRPC_PYTHON_BUILD_SYSTEM_OPENSSL=1
(my_vdev) []$ export GRPC_PYTHON_BUILD_SYSTEM_ZLIB=1
 
(my_vdev) []$ pip install --no-cache-dir --force-reinstall grpcio
Looking in indexes: https://pypi.org/simple, https://wheels.developerfirst.ibm.com/ppc64le/linux
Collecting grpcio
  Downloading grpcio-1.76.0.tar.gz (12.8 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 12.8/12.8 MB 10.6 MB/s  0:00:01
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting typing-extensions~=4.12 (from grpcio)
  Downloading typing_extensions-4.15.0-py3-none-any.whl.metadata (3.3 kB)
Downloading typing_extensions-4.15.0-py3-none-any.whl (44 kB)
Building wheels for collected packages: grpcio
  Building wheel for grpcio (pyproject.toml) ... done
  Created wheel for grpcio: filename=grpcio-1.76.0-cp311-cp311-linux_ppc64le.whl size=182778098 sha256=d6e0d35789eb8eb435f35739bc66da709f3cb78febc24ea030c708991d4d2954
  Stored in directory: /tmp/pip-ephem-wheel-cache-7bss19y5/wheels/26/9c/5e/8a7d04471639962953fc774e062de0b6b6f479863051788a39
Successfully built grpcio
Installing collected packages: typing-extensions, grpcio
  Attempting uninstall: typing-extensions
    Found existing installation: typing_extensions 4.15.0
    Uninstalling typing_extensions-4.15.0:
      Successfully uninstalled typing_extensions-4.15.0
Successfully installed grpcio-1.76.0 typing-extensions-4.15.0
 
 (my_vdev)[]$ pip install torch  pyMilvus sentence-transformers transformers langchain  numPy
 (my_vdev)[]$ pip install  milvus_cli