Feature #17468: Deprecate RUBY_DEVEL

• Status: Open
• Priority: Normal
• Assignee: -
• Target version: 3.1

[naruse (Yui NARUSE)]

Some configuration of Ruby use RUBY_DEVEL, which depends PATCH_LEVEL.
But depending PATCH_LEVEL causes issues which will become revealed on the final release.
Though we release some previews and RCs, they don't contributes the quality around RUBY_DEVEL.

Therefore to ensure CI tests the quality of the final release, we need to deprecate RUBY_DEVEL.

[naruse (Yui NARUSE)]

• Backport deleted (2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN)
• Tracker changed from Bug to Feature