* Package name    : py-yaml12
  Version         : 0.1.0
  Upstream Contact: Tomasz Kalinowski
* URL             : https://posit-dev.github.io/py-yaml12/
* License         : MIT
  Programming Lang: Python, Rust
  Description     : modern YAML 1.2 parser and emitter for Python, written in Rust

A YAML 1.2 parser/formatter for Python, implemented in Rust for speed and correctness.
Built on the excellent saphyr crate.

For almost every use case, yaml12 lets you work with plain builtin Python
types end to end: dict, list, int, float, str, and None. JSON is a subset
of YAML 1.2, so all valid JSON is also valid YAML and parses the same way.

 * Parse YAML text or files with parse_yaml() and read_yaml().
 * Serialize Python values with format_yaml() or write_yaml().
 * 100% compliance with the yaml-test-suite.
 * Advanced YAML features (document streams, tags, complex mapping keys)
   are supported and round-trip cleanly when needed. Yaml is the wrapper
   type for tagged nodes and unhashable mapping keys.

See https://opensource.posit.co/blog/2026-05-21_in-defense-of-yaml/#introducing-py-yaml12

Please note, this is a *request* for a package. Unfortunately, I don’t
currently have time or energy to package this myself.