mesa/bin/python-venv.sh
Eric Engestrom 75f44bd79a bin: add wrapper to run scripts in a python venv
This isolates the script environment from the rest of the machine,
avoiding missing/incompatible dependencies and avoiding polluting the
rest of the machine with python packages.

Signed-off-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24367>
2023-08-03 23:21:31 +00:00

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#!/usr/bin/env bash
set -eu
readonly requirements_file=$1
shift
venv_dir="$(dirname "$requirements_file")"/.venv
readonly venv_dir
readonly venv_req=$venv_dir/requirements.txt
if ! [ -r "$venv_dir/bin/activate" ]
then
echo "Creating Python environment..."
python -m venv "$venv_dir"
fi
# shellcheck disable=1091
source "$venv_dir/bin/activate"
if ! cmp --quiet "$requirements_file" "$venv_req"
then
echo "$(realpath --relative-to="$PWD" "$requirements_file") has changed, re-installing..."
pip --disable-pip-version-check install --requirement "$requirements_file"
cp "$requirements_file" "$venv_req"
fi
python "$@"