Switch to psycopg rather than psycopg2

It's a bit more modern and uses dedicated c bindings

README.md

@@ -1,4 +1,4 @@
-sudo zypper in python3-psycopg2
+sudo zypper in python3-psycopg
 sudo su - postgres
 # `createdb -O <LOCAL_USER> imported_git`
 

lib/db.py

@@ -1,7 +1,6 @@
 import logging
 
-import psycopg2
-from psycopg2.extras import LoggingConnection
+import psycopg
 
 from lib.config import config
 
@@ -17,11 +16,10 @@ class DB:
             # read the connection parameters
             params = config(section=self.config_section)
             # connect to the PostgreSQL server
-            self.conn = psycopg2.connect(connection_factory=LoggingConnection, **params)
-            logger = logging.getLogger(__name__)
-            self.conn.initialize(logger)
+            self.conn = psycopg.connect(conninfo=f"dbname={params['database']}")
+            logging.getLogger("psycopg.pool").setLevel(logging.INFO)
 
-        except (Exception, psycopg2.DatabaseError) as error:
+        except (Exception, psycopg.DatabaseError) as error:
             print(error)
             raise error
 
@@ -32,7 +30,7 @@ class DB:
             # execute a statement
             try:
                 cur.execute("SELECT MAX(version) from scheme")
-            except psycopg2.errors.UndefinedTable as error:
+            except psycopg.errors.UndefinedTable as error:
                 cur.close()
                 self.close()
                 self.connect()
@@ -273,7 +271,7 @@ class DB:
                         cur.execute(command)
             # commit the changes
             self.conn.commit()
-        except (Exception, psycopg2.DatabaseError) as error:
+        except (Exception, psycopg.DatabaseError) as error:
             print(error)
             self.close()
             raise error