[ruby-core:106400] [Ruby master Feature#18376] Version comparison API

Issue #18376 has been updated by vo.x (Vit Ondruch).


There is probably more to this issue.

1. On the first place, I'd love if everybody used introspection instead of version checks. We would not need to have this conversation. But honestly, I don't really know how to detect the kwargs.
2. Ruby used to have simple version comparison up until 2.1.10. The string comparison worked just fine. Nevertheless "-preview1" would break it anyway.
3. I don't know what is suggested way to compare Ruby versions since Ruby 2.1.10. `String#version_compare` would be certainly quite easy interface. Or RUBY_VERSION could provide some operator for version comparisons. `Gem::Version.new("2.6.18")<=>Gem::Version.new("2.6.3")` was pointed out already in #5861 but that means the third party dependency.
4. If the third party dependency is deemed OK, then it should be accompanied by `require "rubygems/version"` to ensure it is available. But that on itself won't work and `require "rubygems"` is needed. I don't think that it can be assumed that dependencies are loaded.

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Feature #18376: Version comparison API
https://bugs.ruby-lang.org/issues/18376#change-95038

* Author: vo.x (Vit Ondruch)
* Status: Open
* Priority: Normal
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Is there a chance to have version comparison API? For example if `Gem::Version` was extracted into `::Version`. This idea was triggered by this PR [1] and [2], where the `Gem::Version` API is used for comparing Ruby versions. While RubyGems might be available everywhere, it does not look correct to introduce dependencies on RubyGems into libraries which could run without them just fine.



[1]: https://github.com/mperham/connection_pool/pull/157
[2]: https://github.com/mperham/connection_pool/issues/158



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