An alternative to `cargo sqlx prepare --merged` that doesn't rebuild all the crates in the workspace

make-sqlx-data.sh

#!/bin/sh

set -eu -o pipefail

export DATABASE_URL=$(pg_tmp)
psql "$DATABASE_URL" -f schema/schema.sql

# We don't use `cargo sqlx prepare --merged` because it rebuilds everything
for i in crates/{a,b,c}; do
        (cd "$i" && cargo sqlx prepare -- --lib)
done

# We need to make a merged file at the workspace root for sqlx `offline`
# to work properly with rust-analyzer. Otherwise many red squigglies.
cat crates/*/sqlx-data.json | jq --sort-keys -s add > sqlx-data.json
rm -f crates/*/sqlx-data.json