Indexer PostgreSQL install instructions

apps/nextra/pages/en/build/indexer/indexer-sdk/documentation/define-schema.mdx

@@ -20,7 +20,8 @@ Each core processor indexes a specific type of data.
 You can explore the [full list of processors](https://github.com/aptos-labs/aptos-indexer-processors/tree/main/rust/sdk-processor/src/processors) and the [complete indexer data schema](https://github.com/aptos-labs/aptos-indexer-processors/blob/main/rust/processor/src/db/postgres/schema.rs).
 
 The Aptos core processors and the [Quickstart Guide](../quickstart.mdx) use [PostgreSQL](https://www.postgresql.org/) as the database and [Diesel](https://diesel.rs/) as the ORM.
-However, you are free to choose any database or ORM that fits your needs.
+If you'd also like to use PostgreSQL and Diesel, you can follow the instructions in [PostgreSQL Installation](../quickstart.mdx#postgresql-installation).
+
+You're free to use whatever database and ORM you prefer.
 Popular alternatives include [SeaORM](https://www.sea-ql.org/SeaORM/) and [SQLx](https://github.com/launchbadge/sqlx). 
-Setting up a database and using an ORM is beyond the scope of these tutorials. 
 If you need guidance, refer to the tutorials linked above for more information.

apps/nextra/pages/en/build/indexer/indexer-sdk/quickstart.mdx

@@ -32,24 +32,31 @@ You also need the following tools:
 
 - Rust 1.79: [Installation Guide](https://www.rust-lang.org/tools/install)
 - Cargo: [Installation Guide](https://doc.rust-lang.org/cargo/getting-started/installation.html#install-rust-and-cargo)
-- Diesel CLI: [Installation Guide](https://diesel.rs/guides/getting-started.html)
 
-We use PostgreSQL as our database in this tutorial. You’re free to use whatever you want, but this tutorial is geared
+We use [PostgreSQL](https://www.postgresql.org/) as our database and [Diesel](https://diesel.rs/guides/getting-started) as our ORM in this tutorial. You’re free to use whatever you want, but this tutorial is geared
 towards PostgreSQL for the sake of simplicity. We use the following database configuration and tools:
 
-[PostgreSQL](https://www.postgresql.org/download/)
+### PostgreSQL Installation (for macOS)
+1. `brew install libpq` ([this is a postgres C API library](https://formulae.brew.sh/formula/libpq)). Also perform all export commands post-installation
+```bash
+export PATH="/opt/homebrew/opt/libpq/bin:$PATH"
+export LDFLAGS="-L/opt/homebrew/opt/libpq/lib"
+export CPPFLAGS="-I/opt/homebrew/opt/libpq/include"
+```
+2. `brew install postgres`
+3. `pg_ctl -D /opt/homebrew/var/postgres start` or `brew services start postgresql`
+4. `/opt/homebrew/bin/createuser -s postgres`
+5. Ensure you're able to do: `psql postgres`
+6. `cargo install diesel_cli --no-default-features --features postgres`
+7. Make sure that you're in the DB folder (run `cd src/db/postgres` from base directory), run `diesel migration run --database-url postgresql://localhost/postgres`
+   a. If for some reason this database is already being used, try a different db. e.g.
+      `DATABASE_URL=postgres://postgres@localhost:5432/indexer_v2 diesel database reset`
 
 - We will use a database hosted on `localhost` on the port `5432`, which should be the default.
 - When you create your username, keep track of it and the password you use for it.
-- You can view a tutorial for installing PostgreSQL and
-  psql [here](https://www.digitalocean.com/community/tutorials/how-to-install-postgresql-on-ubuntu-22-04-quickstart)
-  tool to set up your database more quickly.
 - To easily view your database data, consider using a GUI like [DBeaver](https://dbeaver.io/)
   *recommended*, [pgAdmin](https://www.pgadmin.org/), or [Postico](https://eggerapps.at/postico2/).
 
-Explaining how to create a database is beyond the scope of this tutorial. If you are not sure how to do it, consider
-checking out tutorials on how to create a database with the `psql` tool.
-
 ## Setting up your environment
 
 Make sure to start the `postgresql` service: