formula_creator: remove outdated comment, show resource only for perl

[cho-m]

Since we no longer officially support running test on HEAD, remove the extra comment about it.

Also only show resource block on Perl where the install has a matching stage block. We switched to recommending Bundler on Ruby.

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As note, Perl still needs manual resource handling. There isn't a great way to handle "macOS perl" dependencies vs "brew perl" dependencies.

We could use "brew perl" to specify dependencies and then

• filter out the ones already installed as part of Apple system perl.
• or just install duplicates. Main advantage of deduping is disk space usage.

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[Copilot]

🟡 Changes recommended

The Ruby resource-exclusion behavior needs regression coverage.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Updates generated formula templates to reflect current Ruby and test guidance.

Changes:

• Limits dependency resource examples to Perl formulas.
• Removes outdated --HEAD test instructions.

File summaries

File	Description
Library/Homebrew/formula_creator.rb	Updates generated formula comments and resource guidance.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 1
• Review effort level: Balanced

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[MikeMcQuaid]

Thanks!

[cho-m]

Will merge and continue work on Ruby part. Once I have a working example in Homebrew/core, I will open follow up PR.

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Moving thread discussion response for visibility:

--no-binstubs or setting the config variable might work here. temporary GEM_HOME makes sense to me too 👍🏻

I did try some other configs and so far only GEM_HOME and BUNDLE_PATH worked.

From documentation, Bundler 5 will change BUNDLE_PATH default so may go with setting the new path

• "When not set, Bundler install by default to a .bundle directory relative to repository root in Bundler 5, and to the default system path (Gem.dir) before Bundler 5"¹

Footnotes

1. https://guides.rubygems.org/command-reference/bundle-config/#:~:text=path%20(-,BUNDLE_PATH,-)%3A%20The%20location%20on ↩