dataframe-lazy

Lazy query engine for the dataframe ecosystem.

Stackage Nightly 2026-09-18:	2.4.2.0
Latest on Hackage:	2.4.2.0

See all snapshots dataframe-lazy appears in

MIT licensed by Michael Chavinda

Maintained by [email protected]

This version can be pinned in stack with:dataframe-lazy-2.4.2.0@sha256:57c9ab92136fc79b38fdc8f9fa94ad65a0917c682beed098755cef95aa6a9a79,3375

Module documentation for 2.4.2.0

DataFrame
- DataFrame.Lazy
  - DataFrame.Lazy.IO
    - DataFrame.Lazy.IO.Binary
    - DataFrame.Lazy.IO.CSV
- DataFrame.Typed
  - DataFrame.Typed.Lazy

Depends on 17 packages(full list with versions):

async, attoparsec, base, bytestring, containers, dataframe-core, dataframe-csv, dataframe-operations, dataframe-parquet, dataframe-parsing, directory, filepath, Glob, stm, temporary, text, vector

Used by 1 package in nightly-2026-09-18(full list with versions):

dataframe

The lazy/streaming query engine: relational-algebra plans, optimizer, pull-based executor, and column-oriented spill format. Includes the typed lazy wrapper. Currently depends on dataframe-csv and dataframe-parquet since the executor calls those readers directly.