carrier

0.3.0.4

Isolate Functions for Remote Execution

15packages depend

217.6Kdownloads / year

100.0%test coverage

13/13checks pass

Overview

About

Maintained by Lionel HenryFirst published 2018-10-164 releasesCRAN page ↗GitHub ↗

Sending functions to remote processes can be wasteful of resources because they carry their environments with them. With the carrier package, it is easy to create functions that are isolated from their environment. These isolated functions, also called crates, print at the console with their total size and can be easily tested locally before being sent to a remote.

Install

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

install.packages("carrier", 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("r-lib/carrier")

Development version from r-lib/carrier. 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-carrier

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-carrier

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

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

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-carrier

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 58 s · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.94

100.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 473 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 0%
References docs: 0%

Downloads

217.6K

CRAN downloads in the past year

Rank #942 · ~596/day · ~18.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

14.4K30 days

49.9K90 days

217.6K1 year

Compare downloads with other packages →

Also on715 r2u13 autocran2.1K conda_forge22 c2d4u

Repository

GitHub ↗ r-lib/carrier

70Stars

3Forks

6Open issues

2Open PRs

4Releases

72Commits

3Contributors

72 commits · Last activity 2026-07-22 · 0% stars, 30d

Stars over time

2025-06-17 · 612026-07-07 · 70

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/r-lib/carrier on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Docs source (1)

README.Rmd

Lint, format, editor (3)

AirVS CodeRStudio project

Show all practices

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.4.0

Imports (2)

lobstr rlang

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

15direct

1indirect

bakerrr dynparam orthanc ronfig worldmet Tplyr callr evsim filibustr furrr gratia mlflow openairmaps purrr rTPC

Code & Tests

Code Composition

R 410 (68%)Rd 147 (24%)Markdown 47 (8%)

Code characteristics

Object systems

S31

Cyclomatic complexity: 2.0 median / 9 max
Test cases: 20 / 0.94 per code line

Test coverage

Line coverage

100%

Expression

100.0%

Tests / Examples

100.0% / 74% ex

Functions

7 2 exported

Complexity

2.7 avg / 9 max

Call network

7 nodes / 5 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

7 functions

Function	Cyclo	Coverage
crate exp	9	100%
is_crate exp	1	100%
crate_sizes	1	100%
format_bytes	1	100%
locally	3	100%
new_crate	2	100%

People & History

People (2)

Maintainer (1)

Lionel Henry

Author, Maintainer

Authors (1)

Lionel Henry

Author, Maintainer

Posit Software, PBC

Funders (1)

Posit Software, PBC

Listed in earlier versions (1)

RStudio

no longer listed · 0.1.0

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.3.0.4Latest
2025-09-11 · current release · diff ↗
0.2.0
2025-06-23 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.1.1
2023-04-28 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.1.0
2018-10-16
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2018-10-16
Total releases: 4 / 8 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.4.0
Download size: 9.5 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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