dlt version

1.10.0

Describe the problem

This change removed the loader_file_format from the NormalizeConfiguration class.

According to the docs (e.g. here), you should be able to specificy loader_file_format="parquet" in the [normalize] section, and dlt would then write Parquet files to the destination. But this option doesn't work anymore now.

Expected behavior

The loader file format should be according to what's in .dlt/config.toml.

Steps to reproduce

Add this to your config.toml and see how the result is always written as jsonl after running a pipeline:

[normalize]
loader_file_format="parquet"

Operating system

Linux

Runtime environment

Local

Python version

3.13

dlt data source

Filesystem, SQL, REST API

dlt destination

No response

Other deployment details

No response

Additional information

No response