remove intarray dependency

README.md

@@ -51,13 +51,6 @@ developers with a more flexible/extensible alternative to the raw hived API.
 Hivemind is a [HAF](https://gitlab.syncad.com/hive/haf)-based application. To work properly it requires an existing
 and working HAF database.
 
-Hivemind also requires the postgresql `intarray` extension to be installed. The postgresql user who has `CREATE`
-privilege can load the module with following command:
-
-```postgresql
-CREATE EXTENSION IF NOT EXISTS intarray;
-```
-
 Clone the hivemind repository with its submodules:
 
 ```bash

hive/db/schema.py

@@ -543,9 +543,6 @@ def create_fk(db):
 def setup(db, admin_db):
     """Creates all tables and seed data"""
 
-    sql = """SELECT * FROM pg_extension WHERE extname='intarray'"""
-    assert admin_db.query_row(sql), "The database requires created 'intarray' extension"
-
     # create schema and aux functions
     admin_db.query(f'CREATE SCHEMA IF NOT EXISTS {SCHEMA_NAME} AUTHORIZATION {SCHEMA_OWNER_NAME};')
 

hive/db/sql_scripts/upgrade/upgrade_table_schema.sql

 do $$
 BEGIN
-  ASSERT EXISTS (SELECT * FROM pg_extension WHERE extname='intarray'), 'The database requires created "intarray" extension';
   ASSERT (SELECT setting FROM pg_settings where name='join_collapse_limit' and source='database')::int = 16, 'Bad optimizer settings, use install_app.sh script to setup target database correctly';
   ASSERT (SELECT setting FROM pg_settings where name='from_collapse_limit' and source='database')::int = 16, 'Bad optimizer settings, use install_app.sh script to setup target database correctly';
   ASSERT (SELECT setting FROM pg_settings where name='jit' and source='database')::BOOLEAN = False, 'Bad optimizer settings, use install_app.sh script to setup target database correctly';

scripts/install_app.sql

 -- Script contains all ADMINISTRATIVE steps required to setup a target database for Hivemind App
-CREATE EXTENSION IF NOT EXISTS intarray;
-
 DO $$
 DECLARE
 __version INT;