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GH-49998: [CI][Python] Pin to an older release of miniforge to fix mamba hang #49999

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Merged
raulcd merged 2 commits into from
May 20, 2026
+9 −3
Merged

GH-49998: [CI][Python] Pin to an older release of miniforge to fix mamba hang #49999

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0421346
Pin to an older release of miniforge
adamreeve May 20, 2026
144463c
Merge remote-tracking branch 'upstream/main' into mamba-hang-fix
adamreeve May 20, 2026
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6 changes: 4 additions & 2 deletions ci/docker/conda.dockerfile
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Expand Up @@ -30,9 +30,11 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*

# install conda and mamba via miniforge
# Install conda and mamba via miniforge.
# Temporarily pin to an old version of miniforge due to a regression in the mamba solver.
# See https://github.com/apache/arrow/issues/49998.
COPY ci/scripts/install_conda.sh /arrow/ci/scripts/
RUN /arrow/ci/scripts/install_conda.sh miniforge3 latest /opt/conda
RUN /arrow/ci/scripts/install_conda.sh miniforge3 26.1.1-3 /opt/conda
ENV PATH=/opt/conda/bin:$PATH

# create a conda environment
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6 changes: 5 additions & 1 deletion ci/scripts/install_conda.sh
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Expand Up @@ -30,7 +30,11 @@ installer=$1
version=$2
prefix=$3

download_url=https://github.com/conda-forge/miniforge/releases/${version}/download/${installer^}-${platform}-${arch}.sh
if [ "$version" = "latest" ]; then
download_url=https://github.com/conda-forge/miniforge/releases/latest/download/${installer^}-${platform}-${arch}.sh
else
download_url=https://github.com/conda-forge/miniforge/releases/download/${version}/${installer^}-${platform}-${arch}.sh
fi

echo "Downloading Miniconda installer from ${download_url} ..."

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