[ARROW-9572] [CI][Homebrew] Properly enable Gandiva and improve testing

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++ - Gandiva, Packaging
• External issue URL: https://github.com/apache/arrow/issues/25638
• Assignee: Unassigned
• Reporter: Neal Richardson
• Created: 27/Jul/20 18:58
• Updated: 11/Jan/23 08:07

Description

ARROW-9086 enabled Gandiva in our Homebrew formula, but when I tried to add that to the official Homebrew formula at release time, it failed. See some discussion at https://github.com/Homebrew/homebrew-core/pull/58581, though unfortunately the build logs are gone.

It turns out that the testing that Homebrew does is more thorough than the install/audit we do in CI. See https://github.com/Homebrew/homebrew-core/pull/58581/checks?check_run_id=915732878 for example. They install, build the bottle, then remove all dependencies and reinstall the bottle. Since this failed, what I think it means is that `llvm` is not a build-only dependency for Gandiva--it built but couldn't run successfully because `llvm` had been removed.

cc kou