Error at cargo run --manifest-path ../tools/post-install/Cargo.toml -- pg_config

[MtnBiker]

Relevant system information:

• OS: macOS 14.2.1 (23C71)
• PostgreSQL version (output of SELECT version();): [e.g. 12.0, 13.2, etc]
• TimescaleDB Toolkit version: "PostgreSQL 16.1 on aarch64-apple-darwin21.6.0, compiled by Apple clang version 14.0.0 (clang-1400.0.29.102), 64-bit"
• Installation method: source— following "Building and Installing the extension"

Describe the bug
Followed source install
.

To Reproduce
Did the following:
git clone https://github.com/timescale/timescaledb-toolkit.git
cd timescaledb-toolkit
OK and folder is there.
Added export PGRX_HOME="${HOME}/.cargo/“ to .zshrc after next step failed
cargo pgrx install --release # reran successfully

Then the following

timescaledb-toolkit/extension on  main is 📦 vtimescaledb_toolkit@1.18.0-dev via 𝗥 v1.74.0
➜ cargo run --manifest-path ../tools/post-install/Cargo.toml -- pg_config
    Finished dev [unoptimized + debuginfo] target(s) in 0.13s
     Running `/Users/gscar/Documents/Delicias/Utilities, Energy and Solar/Solar Panels 2023-ABC/Solar production, etc/enphase2/timescaledb-toolkit/target/debug/post-install pg_config`
Generating Version 1.18.0-dev
Upgradable From ["1.6.0", "1.7.0", "1.8.0", "1.10.0-dev", "1.10.1", "1.11.0", "1.12.0", "1.12.1", "1.13.0", "1.13.1", "1.14.0", "1.15.0", "1.16.0", "1.17.0"]
thread 'main' panicked at tools/post-install/src/main.rs:330:9:
cannot rename `/Applications/Postgres.app/Contents/Versions/16/lib/postgresql/timescaledb_toolkit.so` to `/Applications/Postgres.app/Contents/Versions/16/lib/postgresql/timescaledb_toolkit-1.18.0-dev.so` due to `No such file or directory (os error 2)`
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

The other files in /Applications/Postgres.app/Contents/Versions/16/lib/postgresql/ are .dylib and no .so files.

This is the first pg extention I've installed with Rust. I am a little surprised that the install is into the Postgres.app rather than /Users/gscar/Library/Application Support/Postgres/var-16/

Thanks for any suggestions on how to proceed.