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#!/usr/bin/env bash
if [ -n "${CI:-}" ] ; then echo "::group::Ensure Python" ; fi
set -o errexit
set -o nounset
set -x
HERE="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# shellcheck source=tooling/scripts/common.sh
source "$HERE/common.sh"
# This is to guard against multiple builds in parallel. The various installers will tend
# to stomp all over each other if you do this and they haven't previously successfully
# succeeded. We use a lock file to block progress so only one install runs at a time.
# This script should be pretty fast once files are cached, so the loss of concurrency
# is not a major problem.
# This should be using the lockfile command, but that's not available on the
# containerized travis and we can't install it without sudo.
# It is unclear if this is actually useful. I was seeing behaviour that suggested
# concurrent runs of the installer, but I can't seem to find any evidence of this lock
# ever not being acquired.
VERSION="$1"
TARGET=$(pythonloc "$VERSION")
if [ ! -e "$TARGET/bin/python" ] ; then
mkdir -p "$BASE"
LOCKFILE="$BASE/.install-lockfile"
while true; do
if mkdir "$LOCKFILE" 2>/dev/null; then
echo "Successfully acquired installer."
break
else
echo "Failed to acquire lock. Is another installer running? Waiting a bit."
fi
sleep $(( ( RANDOM % 10 ) + 1 )).$(( RANDOM % 100 ))s
if (( $(date '+%s') > 300 + $(stat --format=%X "$LOCKFILE") )); then
echo "We've waited long enough"
rm -rf "$LOCKFILE"
fi
done
trap 'rm -rf $LOCKFILE' EXIT
if [ ! -d "$PYENV/.git" ]; then
rm -rf "$PYENV"
git clone https://github.com/pyenv/pyenv.git "$PYENV"
else
back=$PWD
cd "$PYENV"
git fetch || echo "Update failed to complete. Ignoring"
git reset --hard origin/master
cd "$back"
fi
# See if installing all of these will fix our build issues...
if (command -v apt-get >/dev/null 2>&1) && { [ -n "${GITHUB_ACTIONS-}" ] || [ -n "${CODESPACES-}" ] ; }; then
sudo apt-get update
sudo apt-get install -y \
build-essential \
libbz2-dev \
libffi-dev \
libgdbm-dev \
libgdbm-compat-dev \
liblzma-dev \
libncurses5-dev \
libreadline-dev \
libsqlite3-dev \
libssl-dev \
tk-dev \
uuid-dev \
zlib1g-dev
fi
for _ in $(seq 5); do
if OUTPUT=$("$BASE/pyenv/plugins/python-build/bin/python-build" "$VERSION" "$TARGET" 2>&1); then
exit 0
fi
if echo "$OUTPUT" | grep -q "definition not found"; then
echo "Python version $VERSION is no longer available."
echo "Please run 'make upgrade-requirements' to update to the latest version."
exit 1
fi
echo "Command failed. For a possible solution, visit"
echo "https://github.com/pyenv/pyenv/wiki#suggested-build-environment."
echo "Retrying..."
sleep $(( ( RANDOM % 10 ) + 1 )).$(( RANDOM % 100 ))s
done
fi
if [ -n "${CI:-}" ] ; then echo "::endgroup::" ; fi
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