FROM scratch as base
ENV VERSION=2.10.0
ENV SRC_HASH=bdabb6d336998cbb378d4b9db3a4b56a1e3235701dc05ea2690d9a997ed5041c
ENV SRC_FILE=semantic_version-${VERSION}.tar.gz
ENV SRC_SITE=https://files.pythonhosted.org/packages/source/s/semantic_version/${SRC_FILE}

FROM base as fetch
ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .

FROM fetch as build
COPY --from=stagex/busybox . /
COPY --from=stagex/musl . /
COPY --from=stagex/zlib . /
COPY --from=stagex/libffi . /
COPY --from=stagex/python . /
COPY --from=stagex/py-flit . /
COPY --from=stagex/py-wheel . /
COPY --from=stagex/py-setuptools . /
COPY --from=stagex/py-gpep517 . /
COPY --from=stagex/py-installer . /
RUN tar -xzf ${SRC_FILE}
WORKDIR semantic_version-${VERSION}
RUN gpep517 build-wheel --wheel-dir .dist --output-fd 3 3>&1 >&2

FROM build as install
RUN <<-EOF
    set -eu
    python -m installer -d /rootfs .dist/*.whl
    find /rootfs | grep -E "(/__pycache__$|\.pyc$|\.pyo$)" | xargs rm -rf
    find /rootfs -exec touch -hcd "@0" "{}" +
EOF

FROM stagex/filesystem as package
COPY --from=install /rootfs/. /