th: Update instructions - make everything self contained

SETUP.md

@@ -35,18 +35,15 @@ In the following instructions, replace USER with your *nix user name.
 
 1. Add yourself to the postgres group with `sudo usermod -a -G postgres USER`. You'll need to log out and back in to
 update your groups.
-2. Run `sudo mkdir /run/postgresql` to create said folder if it doesn't exist.
-3. Run `sudo chown postgres:postgres /run/postgresql` to change the owner to postgres.
-4. Run `sudo chmod g+w /run/postgresql` to allow `postgres` group members to write to the folder.
-5. Navigate to the root of this repo.
-6. Set up a local DB cluster with `pg_ctl -D data/postgres15 initdb -o '-U mastodon --auth-host=trust'`.
-7. Run it with `pg_ctl -D data/postgres15 start`.
-8. Run `bundle config set --local path 'vendor/bundle`. This will store the all the ruby gems locally so that we can
+2. Navigate to the root of this repo.
+2. Set up a local DB cluster with `pg_ctl -D data/postgres15 initdb -o '-U mastodon --auth-host=trust'`.
+3. Add the line `unix_socket_directories='.'` to `data/postgres15/postgresql.conf`.
+4. Run the DB with `pg_ctl -D data/postgres15 start`.
+5. Run `bundle config set --local path 'vendor/bundle`. This will store the all the ruby gems locally so that we can
    avoid interfering with system config.
-9. Run `bundle install`.
-10. Run `yarn install`.
-11. Run `export $(grep -v '^#' .env.dev | xargs)` to source in our dev vars. You may want to alias this.
-12. Run `bundle exec rake db:setup`. If this fails, you can use `bundle exec rake db:reset` to forcibly regenerate it.
+6. Run `bundle install`.
+7. Run `yarn install`.
+8. Run `bundle exec rake db:setup`. If this fails, you can use `bundle exec rake db:reset` to forcibly regenerate it.
 
 ## Running Mastodon
 
@@ -70,6 +67,12 @@ Happy to troubleshoot with someone better with Ruby than us >_<'/.
 
 ## Webpack Issues
 If Webpack compalins about being unable to find some assets or locales:
+Try:
+
+1. `rm -rf node_modules`
+2. `yarn install`
+
+If this doesn't help, try:
 
 1. yarn add webpack
 2. git restore package.json yarn.lock