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https://issues.apache.org/jira/browse/ARROW-17872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17611357#comment-17611357
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Jin Shang edited comment on ARROW-17872 at 9/30/22 5:34 AM:
------------------------------------------------------------

FYI The Mac runner we use for github CI (mac-os-latest) has LLVM@14 and LLVM@13 
preinstalled 
([https://github.com/actions/runner-images/blob/main/images/macos/macos-11-Readme.md]).
 If we can use these two version for both Gandiva and Clang-format then the 
build costs for LLVM can be saved entirely. cc [~apitrou] [~kou] 


was (Author: JIRAUSER295132):
FYI The Mac runner we use for github CI (mac-os-latest) has LLVM@14 and LLVM@13 
embeded 
(https://github.com/actions/runner-images/blob/main/images/macos/macos-11-Readme.md).
 If we can use these two version for both Gandiva and Clang-format then the 
build costs for LLVM can be saved entirely. cc [~apitrou] [~kou] 

> [CI] Reduce required dependencies on macOS builds
> -------------------------------------------------
>
>                 Key: ARROW-17872
>                 URL: https://issues.apache.org/jira/browse/ARROW-17872
>             Project: Apache Arrow
>          Issue Type: Wish
>          Components: C++, Continuous Integration, GLib, Python
>            Reporter: Antoine Pitrou
>            Assignee: Jacob Wujciak-Jens
>            Priority: Critical
>             Fix For: 10.0.0
>
>
> Our macOS CI builds on Github Actions usually take at least 10 minutes 
> installing dependencies from Homebrew (because of compiling from source?). It 
> would be nice to cache those, especially as they probably don't change often.



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