FROM scratch as base
ENV VERSION=0.7.0
ENV SRC_HASH=a26d3e3116289bb08216e0d0f7d925fcef0b0194eedfa0c944bcaaa106c4b631
ENV SRC_FILE=installer-${VERSION}.tar.gz
ENV SRC_SITE=https://files.pythonhosted.org/packages/source/i/installer/${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/python . /
COPY --from=stagex/py-wheel . /
COPY --from=stagex/py-pep517 . /
COPY --from=stagex/py-build . /
COPY --from=stagex/py-toml . /
COPY --from=stagex/py-flit . /
COPY --from=stagex/py-packaging . /
COPY --from=stagex/zlib . /
RUN tar -xzf ${SRC_FILE}
WORKDIR installer-${VERSION}
RUN python -m build -wn --skip-dependency-check

FROM build as install
RUN --network=none <<-EOF
	set -eu
    PYTHONPATH=src python -m installer --destdir=/rootfs dist/*.whl
    rm /rootfs/usr/lib/python*/site-packages/installer/_scripts/*.exe
    find /rootfs | grep -E "(/__pycache__$|\.pyc$|\.pyo$)" | xargs rm -rf
EOF

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