yaml12

Fast 'YAML' 1.2 Parser and Formatter

v0.1.0 · Dec 11, 2025 · MIT + file LICENSE

Description

A fast, correct, safe, and ergonomic 'YAML' 1.2 parser and generator written in 'Rust'. Convert between 'YAML' and simple 'R' objects with full support for multi-document streams, tags, anchors, and aliases. Offers opt-in handlers for custom tag behavior and round-trips common 'R' data structures. Implements the 'YAML' 1.2.2 specification from the 'YAML' Language Development Team (2021) <https://yaml.org/spec/1.2.2/>. Proudly supported by Posit.

Downloads

870

Last 30 days

3805th

2.8K

Last 90 days

3.8K

Last year

Trend: -6.4% (30d vs prior 30d)

CRAN Check Status

13 OK

Show all 13 flavors

Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	OK	131.4s
r-devel-linux-x86_64-debian-gcc	OK	104.3s
r-devel-linux-x86_64-fedora-clang	OK	214.4s
r-devel-linux-x86_64-fedora-gcc	OK	222.4s
r-devel-windows-x86_64	OK	191s
r-oldrel-macos-arm64	OK	41s
r-oldrel-macos-x86_64	OK	214s
r-oldrel-windows-x86_64	OK	197s
r-patched-linux-x86_64	OK	123.7s
r-release-linux-x86_64	OK	126.1s
r-release-macos-arm64	OK	39s
r-release-macos-x86_64	OK	167s
r-release-windows-x86_64	OK	213s

Check History

OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE May 2, 2026

NOTE 11 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 25, 2026

NOTE r-release-macos-x86_64

compiled code

File ‘yaml12/libs/yaml12.so’:
  Found non-API calls to R: ‘R_MissingArg’, ‘R_UnboundValue’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 16, 2026

NOTE 13 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 27, 2026

NOTE r-devel-linux-x86_64-debian-gcc

compiled code

File ‘yaml12/libs/yaml12.so’:
  Found non-API calls to R: ‘R_MissingArg’, ‘R_UnboundValue’

Compiled code should not call non-API entry points in R.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual,
and section ‘Moving into C API compliance’ for issues with the use of
non-API entry points.

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (1)

imports

frontmatter

Dependency Network

Version History

new 0.1.0 Mar 10, 2026