Building a lambda with uv

lambda-build.sh

#!/usr/bin/env bash
# Build a .zip compatible with AWS Lambda
set -euo pipefail

# operate from the same directory as this script
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

# By default create lambda.zip for Python 3.13 on amd64
OUTPUT_ZIP="${OUTPUT_ZIP:-lambda.zip}"
PYTHON_VERSION="${PYTHON_VERSION:-3.13}"
PLATFORM_TAG="${PLATFORM_TAG:-x86_64-manylinux2014}"

if ! command -v uv >/dev/null 2>&1; then
    echo "uv is required but not found. Install from https://docs.astral.sh/uv/." >&2
    exit 1
fi

# By default build in ./build
BUILD_DIR="build"
PIP_DIR="${BUILD_DIR}/packages"
REQ_FILE="${BUILD_DIR}/requirements.txt"

uv export --frozen --no-dev --no-editable -o "${REQ_FILE}"
uv pip install \
    --no-installer-metadata \
    --no-compile-bytecode \
    --python-platform "${PLATFORM_TAG}" \
    --python "${PYTHON_VERSION}" \
    --target "${PIP_DIR}" \
    -r "${REQ_FILE}"

# Zip it all up
pushd "${PIP_DIR}"
zip -r ../"${OUTPUT_ZIP}" .
popd

# Add your python files here
zip -r "${BUILD_DIR}/${OUTPUT_ZIP}" main.py

# Add your additional packages
zip -r "${BUILD_DIR}/${OUTPUT_ZIP}" lib