46 lines
1.1 KiB
Bash
46 lines
1.1 KiB
Bash
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#!/usr/bin/env bash
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# Synopsis:
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# - get-python-bin.sh python
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# - get-python-bin.sh pip
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#
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# This script selects the most suitable `python` / `pip` binary available
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# for building docs that's installed in this system.
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#
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# If no usable version of Python is available, this script will exit with a
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# non-zero code.
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set -e
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case "$1" in
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"python" | "pip")
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BIN_PREFIX="$1"
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;;
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*)
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echo "Incorrect usage" >&2
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exit 1
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;;
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esac
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# if `python3` is >= 3.8 and `pip3` is available, use that
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if echo -e "import sys\nif sys.version_info < (3,8):\n exit(1)" | python3 && \
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which pip3 1>/dev/null 2>&1; then
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echo "${BIN_PREFIX}3"
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exit 0
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fi
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# check `python3.N` from newest to oldest
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CANDIDATE_SUFFIXES=("3.11" "3.10" "3.9" "3.8")
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for SUFFIX in ${CANDIDATE_SUFFIXES[@]}; do
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# if both `python3.N` and `pip3.N` are available, use that
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if which "python$SUFFIX" 1>/dev/null 2>&1 && \
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which "pip$SUFFIX" 1>/dev/null 2>&1; then
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echo "${BIN_PREFIX}${SUFFIX}"
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exit 0
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fi
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done
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# none found
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echo "No suitable version of Python found" >&2
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exit 2
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