Looks like on-going work, finally completed in 1.21?

https://github.com/golang/go/issues/27151 
On Tuesday, August 15, 2023 at 9:31:41 PM UTC-7 Kurtis Rader wrote:

> All of the packages are significantly smaller -- not just those for macOS. 
> So this isn't due to anything specific to the macOS package(s). Looking at 
> the release notes for Go 1.21.0 I don't see an obvious explanation for the 
> reduction. Downloading and extracting those two packages shows the contents 
> have a proportional size difference:
>
> > du -sh go1.20.7/ go1.21.0/
> 264M go1.20.7/
> 237M go1.21.0/
>
>
> Most of the files and directories are larger in the 1.21.0 release. There 
> are some notable exceptions. The main one, accounting for most of the 
> decrease, is the tool directory: This is the `df -k` diff:
>
> < 111520    ./pkg/tool/darwin_arm64
> ---
> > 80704 ./pkg/tool/darwin_arm64
>
>
>  That is a 3 MB reduction (28%) in the total size of the Go tools. Why are 
> the Go tools so much smaller? I don't see an obvious answer in the release 
> notes.
>
>
> On Tue, Aug 15, 2023 at 8:49 PM xie cui <cuiw...@gmail.com> wrote:
>
>>
>> go1.20.7.darwin-arm64.tar.gz 
>> <https://go.dev/dl/go1.20.7.darwin-arm64.tar.gz>ArchivemacOSARM6492MB
>>
>> go1.21.0.darwin-arm64.tar.gz 
>> <https://go.dev/dl/go1.21.0.darwin-arm64.tar.gz>ArchivemacOSARM6462MB
>> this size reduce about 30%.
>> why the size reduce a lot?
>>
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>
>
> -- 
> Kurtis Rader
> Caretaker of the exceptional canines Junior and Hank
>

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