why `cargo pgrx install` requires `Cargo.toml`

[wasdee]

# PostGIS, but add ULID extension

ARG PG_MAJOR=15

FROM postgis/postgis:${PG_MAJOR}-3.3

RUN apt update

ENV build_deps ca-certificates \
    git \
    build-essential \
    libpq-dev \
    postgresql-server-dev-${PG_MAJOR} \
    curl \
    libreadline6-dev \
    zlib1g-dev

RUN apt-get install -y --no-install-recommends $build_deps pkg-config cmake

WORKDIR /home/postgres

ENV HOME=/home/postgres
ENV PATH=/home/postgres/.cargo/bin:$PATH

RUN chown postgres:postgres /home/postgres

USER postgres

# install rust
RUN \
    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --no-modify-path --profile minimal --default-toolchain 1.68.0 && \
    rustup --version && \
    rustc --version && \
    cargo --version

# pgrx
RUN cargo install cargo-pgrx --version 0.7.4 --locked

RUN cargo pgrx init --pg${PG_MAJOR} $(which pg_config)

USER root

COPY . .

RUN cargo pgrx install

RUN chown -R postgres:postgres /home/postgres
RUN chown -R postgres:postgres /usr/share/postgresql/${PG_MAJOR}/extension
RUN chown -R postgres:postgres /usr/lib/postgresql/${PG_MAJOR}/lib

USER postgres

ENV POSTGRES_HOST_AUTH_METHOD=trust
ENV USER=postgres

> [10/13] RUN cargo pgrx install: #14 0.664 Error: #14 0.664 0: couldn't get cargo metadata #14 0.664 1: `cargo metadata` exited with an error: error: could not find `Cargo.toml` in `/home/postgres` or any parent directory #14 0.664 #14 0.664 #14 0.664 Location: #14 0.664 /home/postgres/.cargo/registry/src/github.com-1ecc6299db9ec823/cargo-pgrx-0.7.4/src/metadata.rs:23 #14 0.664 #14 0.664 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SPANTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ #14 0.664 #14 0.664 0: cargo_pgrx::command::install::execute #14 0.664 at /home/postgres/.cargo/registry/src/github.com-1ecc6299db9ec823/cargo-pgrx-0.7.4/src/command/install.rs:51 #14 0.664 #14 0.664 Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it. #14 0.664 Run with RUST_BACKTRACE=full to include source snippets.

[pksunkara]

Because that actually compiles the code and creates a postgres extension. But I guess, the question is more for https://github.com/tcdi/pgrx.

I would suggest using the deb files at https://github.com/pksunkara/pgx_ulid/releases/tag/v0.1.0 though.

[wasdee]

here is the edit for deb installation. @pksunkara thank you

RUN curl -OJL https://github.com/pksunkara/pgx_ulid/releases/download/v0.1.0/pgx_ulid-v0.1.0-pg15-amd64-linux-gnu.deb && \
    apt install ./pgx_ulid-v0.1.0-pg15-amd64-linux-gnu.deb