Module target 

Resolves the clusterd compute controller address. The driver connects to an externally-managed clusterd (mzcompose or a manually-launched process); it never spawns one.

Local iteration without mzcompose:

1. Start CockroachDB (see CLAUDE.md).
2. Launch the driver first so it hosts PubSub on a fixed port (e.g. 0.0.0.0:6879).
3. Launch clusterd manually (run cargo run -p mz-clusterd -- --help to confirm required flags and the exact TimelyConfig JSON shape from src/cluster-client/src/client.rs):

PERSIST_PUBSUB_URL=http://127.0.0.1:6879 \
  cargo run -p mz-clusterd -- \
    --compute-controller-listen-addr 127.0.0.1:2101 \
    --storage-controller-listen-addr 127.0.0.1:2100 \
    --compute-timely-config 'TIMELY_CONFIG_JSON' \
    --storage-timely-config 'TIMELY_CONFIG_JSON' \
    --process 0 --scratch-directory /tmp/clusterd-scratch

4. Run the e2e test with CLUSTERD_COMPUTE_ADDR=127.0.0.1:2101 and the same PersistHost bind/port the clusterd PubSub URL points at.

Functions

compute_addr

The clusterd compute controller address, from CLUSTERD_COMPUTE_ADDR (default 127.0.0.1:2101).

e2e_enabled

Whether an end-to-end test should run: true only when a target address was explicitly provided. Integration tests skip when unset to keep cargo test green without a running clusterd.