certbot/tools/pip_install.sh

#!/bin/bash -e
# pip installs packages using pinned package versions. If CERTBOT_OLDEST is set
# to 1, a combination of tools/oldest_constraints.txt and
# tools/dev_constraints.txt is used, otherwise, a combination of certbot-auto's
# requirements file and tools/dev_constraints.txt is used. The other file
# always takes precedence over tools/dev_constraints.txt.

# get the root of the Certbot repo
tools_dir=$(dirname $("$(dirname $0)/readlink.py" $0))
dev_constraints="$tools_dir/dev_constraints.txt"
merge_reqs="$tools_dir/merge_requirements.py"
test_constraints=$(mktemp)
trap "rm -f $test_constraints" EXIT

if [ "$CERTBOT_OLDEST" = 1 ]; then
    cp "$tools_dir/oldest_constraints.txt" "$test_constraints"
else
    repo_root=$(dirname "$tools_dir")
    certbot_requirements="$repo_root/letsencrypt-auto-source/pieces/dependency-requirements.txt"
    sed -n -e 's/^\([^[:space:]]*==[^[:space:]]*\).*$/\1/p' "$certbot_requirements" > "$test_constraints"
fi

set -x

# install the requested packages using the pinned requirements as constraints
pip install -q --constraint <("$merge_reqs" "$dev_constraints" "$test_constraints") "$@"