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build(deps): Bump polars from 0.54.4 to 0.55.1 - #319

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build(deps): Bump polars from 0.54.4 to 0.55.1#319
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Bumps polars from 0.54.4 to 0.55.1.

Release notes

Sourced from polars's releases.

Rust Polars 0.55.1

This Releases' DSL matches Python 1.43.2.

🚀 Performance improvements

  • Pushdown len() to concat/union inputs (#28570)
  • Optimize not(bool_f) to not_bool_f (#28474)
  • Split multiplexers that directly scan from in-memory DataFrame (#28376)
  • Make DNS cache global (#28352)
  • Do not remove cache if predicates not pushed to all inputs (#28341)
  • Environment variable for logging slow DNS lookup (#28211)
  • Pre-partition on left, right and semi joins on hive partitioned data (#28374)
  • Rewrite inner joins on hive partitioned data to a union of partitions filtered joins (#28327)
  • Tighten redundant comparisons and propagate filter constraints (#27999)
  • Canonicalize predicates (#28212)
  • Remove excess memory copy in streaming IPC sink (#28141)
  • Parallelize scan_iceberg resolve (#28168)
  • Chunk-aware morsel splitting on single-file IO sink (#27950)
  • Don't allocate for full_null() with small lengths (#28181)
  • Use monotonic deque for rolling min_by/max_by (O(n)) (#27436)
  • Add a sampled resolve mode for multi-file parquet metadata (#28111)
  • Speed up small dtype series sums with a upcast sum kernel (#27958)
  • Don't block on path expansion (#28073)
  • Add bytes-based concurrency control for cloud IO (#27924)
  • Stop flushing multiplexer on phase change (#28013)
  • Prevent empty chunks from triggering copy in rechunk (#27953)
  • Improve performance of struct unnest inside list eval on streaming (#27905)

✨ Enhancements

  • Add struct.drop() (#28666)
  • Improve error message when CSV name de-duplication fails (#28658)
  • Always keep first metadata per source for Parquet (#28661)
  • Improve plan-time row estimates for multi-file parquet scans (#28380)
  • Serialize and deserialize SinkTypeIR::Partitioned (#28112)
  • Add infer_schema_files parameter to scan_csv (#28440)
  • Support reading IEEE 754 total order Parquet column order (#27896)
  • Expose more Expr nodes for cudf_polars (pt 2) (#28404)
  • Allow callback sinks on cloud (#28458)
  • Pre-partition group-by on hive keys (#28444)
  • Add ewm_sum and ewm_sum_by #28151 (#28215)
  • Serve stale records from object_store DNS cache (#28256)
  • Expose more expr nodes for cudf-polars (#28117)
  • Make partition_hive an opt flag (#28345)
  • When displaying IRExprs, only add parentheses when needed for disambiguation (#28319)
  • Show only differing dtypes in assert_frame_equal error (#27816)
  • Add Clone to SpillFrame/Token (#28302)
  • Add Series.degrees/radians and clarify trig functions use radians (#22961)
  • Merge sorted with multikey (#28067)
  • Add list expression which consistently packs elements together into new List type (#27990)

... (truncated)

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Bumps [polars](https://github.com/pola-rs/polars) from 0.54.4 to 0.55.1.
- [Release notes](https://github.com/pola-rs/polars/releases)
- [Commits](pola-rs/polars@rs-0.54.4...rs-0.55.1)

---
updated-dependencies:
- dependency-name: polars
  dependency-version: 0.55.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file rust Pull requests that update Rust code labels Aug 7, 2026
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