Dockerfile.dev

# Development toolchain for firnflow.
#
# The upstream rust:1.94-bookworm image ships rustc and cargo but does
# not register rustfmt or clippy with rustup, so `cargo fmt` and
# `cargo clippy` fail through the rustup proxy. This image layers the
# missing component registrations on top.
#
# Also installs protobuf-compiler because `lance-encoding` (pulled in
# transitively by `lancedb`) has a build.rs that shells out to `protoc`.
#
# Python3 + maturin are here for the `firn` PyO3 bindings crate
# (`python/`): pyo3's build script probes for a Python interpreter, and
# maturin builds the importable extension / wheel.

FROM rust:1.94-bookworm

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        protobuf-compiler \
        libprotobuf-dev \
        python3 \
        python3-pip \
        python3-venv \
    && rm -rf /var/lib/apt/lists/*

RUN rustup component add rustfmt clippy

# maturin builds the `firn` wheel from the PyO3 crate. pip's PEP 668
# guard is bypassed because this is a throwaway dev image.
RUN pip3 install --no-cache-dir --break-system-packages 'maturin>=1.7,<2'