generate of alembic, no engine shows up

[xodiumx]

Hi, trying to use alembic in conjunction with clickhouse_sqlalchemy, but when running the command:

alembic revision --autogenerate -m "init"

engine is not generated in the migration

---

To Reproduce

# env
from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import pool
from clickhouse_sqlalchemy.alembic.dialect import patch_alembic_version, include_object

from alembic import context

from core.models.search import metadata

# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config

# Interpret the config file for Python logging.
# This line sets up loggers basically.
fileConfig(config.config_file_name)

# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata


target_metadata = metadata

# other values from the config, defined by the needs of env.py,
# can be acquired:
# my_important_option = config.get_main_option("my_important_option")
# ... etc.


def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        patch_alembic_version(context)
        context.run_migrations()


def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(connection=connection, target_metadata=target_metadata, include_object=include_object)

        with context.begin_transaction():
            patch_alembic_version(context)
            context.run_migrations()


if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()

# model
from sqlalchemy import Column, MetaData, func
from clickhouse_sqlalchemy import get_declarative_base
from clickhouse_sqlalchemy.engines import ReplicatedReplacingMergeTree
from clickhouse_sqlalchemy.types import String, Date, DateTime

metadata = MetaData()
Base = get_declarative_base(metadata=metadata)

class MyTable(Base):
    __tablename__ = "my_table"

    hash = Column(String, primary_key=True)
    dt = Column(Date, primary_key=True)
    created_at = Column(DateTime, )

    __table_args__ = (
        ReplicatedReplacingMergeTree(
            table_path="/clickhouse/tables/{uuid}/{shard}",
            replica_name="{replica}",
            partition_by=func.toYYYYMM(dt),
            order_by=(hash, dt),
            index_granularity=8192,
        ),
    )

---

Result

"""init

Revision ID: e0e63a0b37ca
Revises:
Create Date: 2024-08-29 14:24:27.711940

"""
....
def upgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table(
        "clicks",
        sa.Column("hash", String(), nullable=False),
        sa.Column("dt", Date(), nullable=False),
        sa.Column("created_at", DateTime(), nullable=True),
        sa.PrimaryKeyConstraint("hash", "dt"),

---

Versions

alembic               1.13.2
asynch                0.2.4
clickhouse-driver     0.2.8
clickhouse-sqlalchemy 0.3.2
SQLAlchemy            2.0.31

What am I doing wrong? Thank you.