gnu: Add rust-polars-0.16. * gnu/packages/crates-io.scm (rust-polars-0.16): New variable. (rust-polars-0.15): Inherit from above.
gnu: Add rust-polars-lazy-0.16. * gnu/packages/crates-io.scm (rust-polars-lazy-0.16): New variable. (rust-polars-lazy-0.15): Inherit from above.
gnu: Add rust-polars-io-0.16. * gnu/packages/crates-io.scm (rust-polars-io-0.16): New variable. (rust-polars-io-0.15): Inherit from above.
gnu: Add rust-polars-core-0.16. * gnu/packages/crates-io.scm (rust-polars-core-0.16): New variable. (rust-polars-core-0.15): Inherit from above.
gnu: Add rust-polars-arrow-0.16. * gnu/packages/crates-io.scm (rust-polars-arrow-0.16): New variable. (rust-polars-arrow-0.15): Inherit from above.
gnu: Add rust-arrow2-0.5. * gnu/packages/crates-io.scm (rust-arrow2-0.5): New variable.
gnu: Add rust-parquet2-0.4. * gnu/packages/crates-io.scm (rust-parquet2-0.4): New variable.
gnu: Add rust-parquet-format-async-temp-0.2. * gnu/packages/crates-io.scm (rust-parquet-format-async-temp-0.2): New variable.
gnu: Add rust-lexical-6. * gnu/packages/crates-io.scm (rust-lexical-6): New variable. (rust-lexical-5): Inherit from above.
gnu: Add rust-lexical-core-0.8. * gnu/packages/crates-io.scm (rust-lexical-core-0.8): New variable. (rust-lexical-core-0.7): Inherit from above.
gnu: Add rust-lexical-parse-float-0.8. * gnu/packages/crates-io.scm (rust-lexical-parse-float-0.8): New variable.
gnu: Add rust-lexical-write-float-0.8. * gnu/packages/crates-io.scm (rust-lexical-write-float-0.8): New variable.
gnu: Add rust-lexical-write-integer-0.8. * gnu/packages/crates-io.scm (rust-lexical-write-integer-0.8): New variable.
gnu: Add rust-lexical-parse-integer-0.8. * gnu/packages/crates-io.scm (rust-lexical-parse-integer-0.8): New variable.
gnu: Add rust-lexical-util-0.8. * gnu/packages/crates-io.scm (rust-lexical-util-0.8): New variable.
gnu: Add rust-comfy-table-4. * gnu/packages/crates-io.scm (rust-comfy-table-4): New variable. (rust-comfy-table-1): Inherit from above.
gnu: Add rust-crossterm-0.20. * gnu/packages/crates-io.scm (rust-crossterm-0.20): New variable. (rust-crossterm-0.19): Inherit from above.
gnu: rust-signal-hook-mio-0.2: Update to 0.2.1. * gnu/packages/crates-io.scm (rust-signal-hook-mio-0.2): Update to 0.2.1.
gnu: rust-signal-hook-0.3: Update to 0.3.10. * gnu/packages/crates-io.scm (rust-signal-hook-0.3): Update to 0.3.10.
gnu: rust-signal-hook-registry-1: Update to 1.4.0. * gnu/packages/crates-io.scm (rust-signal-hook-registry-1): Update to 1.4.0.