q2
Ten releases in six days, methodically porting Quarto's surface into a Rust binary.
Comparison · Infra & APIs
carrier vs checkhelper
A side-by-side editorial comparison of carrier and checkhelper — release velocity, themes, recent moves, and the top alternatives to consider.
carrier vs checkhelper: at a glance
What is carrier?
carrier's 0.3.0 quietly rewrites how crated functions see each other — and breaks code that relied on the old rules.
carrier packages an R function together with the data it needs so it can be shipped to another process or machine. 0.3.0 changed the semantics of functions passed through ...: they are now re-crated inside the main crate environment instead of inheriting from wherever they were defined. That fixes helper functions failing to resolve each other remotely, and stops local environments dragging large objects into the payload.
What is checkhelper?
checkhelper grew from a check wrapper into a CRAN pre-submission auditor.
Two years of near-silence ended with a 1.0.0 that adds a whole audit_* family: audit_downloads(), audit_description(), audit_dontrun() and audit_citation(), each parsing package source statically and returning a tibble of hits paired with a suggested fix. check_n_covr() runs R CMD check and coverage in a single test pass instead of two.
carrier vs checkhelper: editorial side-by-side
carrier
0.0INFRA · APIS
carrier's 0.3.0 quietly rewrites how crated functions see each other — and breaks code that relied on the old rules.
◆ Current state
carrier packages an R function together with the data it needs so it can be shipped to another process or machine. 0.3.0 changed the semantics of functions passed through ...: they are now re-crated inside the main crate environment instead of inheriting from wherever they were defined. That fixes helper functions failing to resolve each other remotely, and stops local environments dragging large objects into the payload.
◆ Where it's heading
Each release tightens the boundary between a crate and its surroundings. 0.2.0 introduced .parent_env defaulting to baseenv() to cut the crate off from the global search path and made unnamed ... arguments an error instead of a silent drop; 0.3.0 finishes the job by controlling the environment chain of the packed closures themselves. The package is trading backwards compatibility for predictable, self-contained payloads — a reasonable bet for something whose failures otherwise surface on a remote worker.
◆ Prediction
The 0.1.0 notes promised an automatic dependency-detection mode to replace explicit packing; nothing since has delivered it, and with the environment semantics now settled that is the obvious next move — though the entries give no date for it.
checkhelper
0.0INFRA · APIS
checkhelper grew from a check wrapper into a CRAN pre-submission auditor.
◆ Current state
Two years of near-silence ended with a 1.0.0 that adds a whole audit_* family: audit_downloads(), audit_description(), audit_dontrun() and audit_citation(), each parsing package source statically and returning a tibble of hits paired with a suggested fix. check_n_covr() runs R CMD check and coverage in a single test pass instead of two.
◆ Where it's heading
The design commitment is static analysis — AST walks via getParseData(), line-by-line Rd reading, no eval() and no namespace loading — so the tool can report on a package it never runs. The existing fix_globals() was reworked the same way: it merges with an existing R/globals.R instead of overwriting it, and separates data.table and rlang pronouns from real undeclared globals so they get an @importFrom line rather than a globalVariables() entry.
◆ Prediction
Each additional CRAN incoming-check rule is a candidate for another audit_* function; the open question these notes leave is whether the family ever gets a single combined entry point.
Alternatives to carrier and checkhelper
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either carrier or checkhelper.
pkgcache
The metadata cache under pak now speaks to authenticated and corporate repositories.
packrat
R's old dependency manager now runs on a vendored copy of its own successor.
webfakes
A fake web server for tests that keeps closing the gap with the real thing.
pool
Hit 1.0, relicensed to MIT, and has shipped almost nothing but dbplyr compatibility since.
evaluate
The engine under every knitted R document reached 1.0 by making evaluation behave like the console.
See all carrier alternatives → · See all checkhelper alternatives →
Recent activity from carrier and checkhelper
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3mo agocheckhelperA static audit_* family for CRAN pre-submission checks ⚡
- 11mo agocarrierCrated helper functions can now see each other ⚡
- 1y agocarriercrate() gains .parent_env and stricter argument handling
- 2y agocheckhelperTest fixes for roxygen2 changes
- 3y agocheckhelpercheckhelper 0.1.0 - First CRAN Release
- 3y agocarrierSource references dropped from crated functions
- 4y agocarrierInitial release with explicit-only crate packing
Frequently asked questions
What is the difference between carrier and checkhelper?
They serve adjacent needs but don't currently overlap on shipped themes. carrier and checkhelper are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is carrier better than checkhelper?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. carrier and checkhelper are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to carrier?
Top carrier alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "carrier alternatives" section above for the current picks, or visit /alternatives/carrier for the full list with editorial commentary on each.
What are the best alternatives to checkhelper?
Top checkhelper alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "checkhelper alternatives" section above for the current picks, or visit /alternatives/checkhelper for the full list with editorial commentary on each.