- from typing import Optional
 - 
 - from pydantic import Field, PositiveInt
 - from pydantic_settings import BaseSettings
 - 
 - 
 - class PGVectoRSConfig(BaseSettings):
 -     """
 -     Configuration settings for PGVecto.RS (Rust-based vector extension for PostgreSQL)
 -     """
 - 
 -     PGVECTO_RS_HOST: Optional[str] = Field(
 -         description="Hostname or IP address of the PostgreSQL server with PGVecto.RS extension (e.g., 'localhost')",
 -         default=None,
 -     )
 - 
 -     PGVECTO_RS_PORT: PositiveInt = Field(
 -         description="Port number on which the PostgreSQL server with PGVecto.RS is listening (default is 5431)",
 -         default=5431,
 -     )
 - 
 -     PGVECTO_RS_USER: Optional[str] = Field(
 -         description="Username for authenticating with the PostgreSQL database using PGVecto.RS",
 -         default=None,
 -     )
 - 
 -     PGVECTO_RS_PASSWORD: Optional[str] = Field(
 -         description="Password for authenticating with the PostgreSQL database using PGVecto.RS",
 -         default=None,
 -     )
 - 
 -     PGVECTO_RS_DATABASE: Optional[str] = Field(
 -         description="Name of the PostgreSQL database with PGVecto.RS extension to connect to",
 -         default=None,
 -     )
 
 
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