ruby / ruby/yaml

YAML::Store dependency for pstore is required and fails on Ruby 4.0

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Dominant language
Ruby
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37
Forks
13
Avg merge
9h 47m
Merged PRs (30d)
2

Description

YAML::Store has this require statement:

https://github.com/ruby/yaml/blob/79b6b15f4ac762464d5ccb9d743fa0451ced70a5/lib/yaml/store.rb#L7-L10

But really it directly inherits from PStore:

https://github.com/ruby/yaml/blob/79b6b15f4ac762464d5ccb9d743fa0451ced70a5/lib/yaml/store.rb#L43

Since Ruby 4.0 pstore is a bundled gem instead of a default gem: https://www.ruby-lang.org/en/news/2025/12/25/ruby-4-0-0-released/#stdlib-updates

The following bundled gems are promoted from default gems.
pstore 0.2.0
0.1.4 to v0.2.0

Though I think https://stdgems.org/pstore/ provides a clearer overview.

I'm not sure what is best: make yaml depend on pstore in the gemspec or simply make it a soft dependency. In either case, the LoadError shouldn't be silently supressed.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with lib/yaml/store.rb, especially the require statements around lines 7-10 and the PStore inheritance near line 43. Check how the gemspec handles dependencies and how the Ruby 4.0 bundled-gem change affects loading. Done means the dependency is handled explicitly and a LoadError is no longer silently suppressed.

Written by the indexing model from the issue text.

Assessment

Tech stack
ruby, yaml
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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