R Observatory: Metrics for libdeflate version 1.25-0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

libdeflate

1.25-0Package record

DEFLATE Compression and Static Library

0packages depend

4.2Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Tyler Morgan-WallCRAN page ↗GitHub ↗Issues ↗

Whole-buffer DEFLATE-based compression and decompression of raw vectors using the 'libdeflate' library (see https://github.com/ebiggers/libdeflate). Provides the user with additional control over the speed and the quality of DEFLATE compression compared to the fixed level of compression offered in R's 'memCompress()' function. Also provides the 'libdeflate' static library and 'C' headers along with a 'CMake' target and 'package‑config' file that ease linking of 'libdeflate' in packages that compile and statically link bundled libraries using 'CMake'.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)

install.packages("libdeflate", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("tylermorganwall/libdeflate")

Development version from tylermorganwall/libdeflate. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-libdeflate

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-libdeflate

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.5 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK12 OK2026-04-25
NOTE11 OK, 3 NOTE2026-03-20
ERROR10 OK, 3 NOTE, 1 ERROR2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.25-0

READMEYes · 262 wordsVignettesNoNEWSYes · 67% structured · does not mention 1.25-0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 4
Examples that run: 100%3 run in a plain check
Exported functions with examples: 75%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

4.2K

CRAN downloads in the past year

Rank #22,225 · ~11/day · ~348/mo

Releases R versions

Daily download trend is not available in this view yet.

24330 days

60190 days

4.2K1 year

Compare downloads with other packages →

Also on377 r2u

How downloads are counted

Repository

tylermorganwall/libdeflate ↗Account: tylermorganwall

1Stars

1Forks

1Open issues

0Open PRs

0Releases

83Commits

1Commit identities

83 commits · Last activity 2026-02-21 · 0% stars, 30d

Responsiveness

not measured

Stars over time

2025-09-08 · 12026-07-07 · 1

How these are measured

PracticesBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/tylermorganwall/libdeflate on 2026-10-22.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (1)

README.Rmd

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Installing libdeflate adds no packages beyond those that come with R.

Depends (1)

R >= 3.5.0

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (4)

Tyler Morgan-Wall

Author, Maintainer since 1.23.0 (2025)

Eric Biggers

Author, Copyright holder

Google LLC

Copyright holder

Kevin Ushey

Copyright holder

Releases (8)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
1.25-0Latest
record
2026-03-20 · current release · diff ↗
unarchivedReturned to CRAN
2025-07-21
1.24-7
record
2025-07-21 · diff ↗
archivedRemoved from CRAN
2025-07-02
repeated policy violation Still not cross-platform portable code despite multiple re-submissions
1.24-4
record
2025-06-29 · diff ↗
1.24-3
record
2025-06-27 · diff ↗
unarchivedReturned to CRAN
2025-06-24
1.24-2
record
2025-06-24 · diff ↗
archivedRemoved from CRAN
2025-06-18
issues were again not corrected in time Does not install when 'cccache' is present
unarchivedReturned to CRAN
2025-05-27
1.24-0
record
2025-05-27 · diff ↗
archivedRemoved from CRAN
2025-05-20
policy violation Does not use system 'libdeflate' Does not acknowledge precedence of 'memCompress'/'memDecompress' Does not install when 'cccache' (which it looks for) is present
1.23.1
record
2025-05-11 · diff ↗
1.23.0
record
2025-05-07
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-05-07
Total releases: 8 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Download size: 193 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("libdeflate")

Format

Morgan-Wall, T., Google LLC, Biggers, E., & Ushey, K. (2026). libdeflate: DEFLATE Compression and Static Library (Version 1.25-0) [Computer software]. https://doi.org/10.32614/CRAN.package.libdeflate

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for libdeflate version 1.25-0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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