From: "hsbt (Hiroshi SHIBATA) via ruby-core" <ruby-core@...>
Date: 2025-02-13T10:36:25+00:00
Subject: [ruby-core:120976] [Ruby master Feature#21020] Sync sig directory for prism of default gem.

Issue #21020 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Open to Assigned
Assignee set to prism

I'm interesting that location of signature with fresh installation of ruby.

The sig directory under the `prism` is fine if we have only prism signature. Where is the best location if we will add `json` or `psych` signatures?

```
1. $prefix/lib/ruby/3.5.0+0/$name/sig <- current proposal
2. $prefix/lib/ruby/3.5.0+0/sig/$name
3. $prefix/lib/ruby/sig/$name
4. $prefix/lib/ruby/gems/3.5.0+0/sig/$name
5. $GEM_HOME/sig/$name # This is same as 4 with $GEM_HOME is not specified.
6. $prefix/include/sig/$name
7. $prefix/share/sig/$name
...
```

I prefer 2 or 3. 

----------------------------------------
Feature #21020: Sync sig directory for prism of default gem.
https://bugs.ruby-lang.org/issues/21020#change-111877

* Author: ksss (Yuki Kurihara)
* Status: Assigned
* Assignee: prism
----------------------------------------
Currently, the type signatures (RBS) for the default gem is not available.
**Prism** is the only default gem with type signatures, but this number is expected to increase in the future.

As a first step to resolving this issue, I propose including the `sig` directory of Prism as a default gem in the synchronization process.

PR: https://github.com/ruby/ruby/pull/12541



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