nail-parquet v1.7.1

[1.7.1] - 2026-05-21

Fixed

• Linux release binaries no longer require glibc ≥ 2.38 (#6).
  Releases built on ubuntu-latest (24.04, glibc 2.39) failed to start on Ubuntu 22.04, Debian 11, RHEL 8, etc. (version 'GLIBC_2.38' not found).
  Linux artifacts are now statically linked against musl — no glibc dependency.
• Windows stack overflow in many subcommands
  (STATUS_STACK_OVERFLOW, 0xC00000FD). The binary now reserves an 8 MiB stack on Windows targets via .cargo/config.toml, matching Linux/macOS.
• Clippy lints under Rust 1.95: too_many_arguments, collapsible_match, nonminimal_bool, needless_range_loop.
• Source formatting drift (cargo fmt) and pinned style via committedrustfmt.toml (hard_tabs = true).

Added

• nail create math functions — column expressions now support a curated set of nail-flavored functions:
  • Scalar (per-row): abs, sign, floor, ceil, round, trunc, sqrt, cbrt, exp, ln, log, log10, log2, pow, sin, cos, tan, asin, acos, atan, atan2.
  • Aggregate (broadcast to every row, auto-wrapped as OVER ()): mean, sum, min, max, count, median, std/stddev, var/variance, stddev_pop, var_pop.
  • Example: -c "z=(value-mean(value))/std(value)".
  • Quote column names that collide with a function (mean("mean")) or that contain operator characters ("revenue-income"-cost).
• -c is now repeatable on nail create. Pass multiple -c flags or comma-separate specs within one flag; commas inside pow(a, b) / round(x, 2) are correctly preserved.
• nail clean — one-shot import cleanup. Snake_case headers, trim string whitespace, drop fully-empty rows by default; --drop-empty-cols opt-in. --keep-headers, --keep-whitespace, --keep-empty-rows to opt out.
• Stdin/stdout via - on every command. Read with cat data.csv | nail head -, write with nail filter ... -o -. Format auto-detected from --format or by sniffing input bytes (Parquet magic, JSON brace, CSV otherwise). Excel is the only format that still requires a file path.
• "Did you mean …?" suggestions on column-not-found errors. Powered by Levenshtein distance with length-scaled tolerance.
• Examples in every --help. Each subcommand now ends its help with 2-3 concrete invocations.
• Multi-platform release workflow (.github/workflows/release.yml) producing artifacts for:
  • x86_64-unknown-linux-musl (static)
  • aarch64-unknown-linux-musl (static, via cross)
  • x86_64-apple-darwin, aarch64-apple-darwin
  • x86_64-pc-windows-msvc
    Each release ships a SHA256SUMS.txt.

Full Changelog: v1.7.0...v1.7.1