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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Sergey Shinderuk <s.shinderuk@postgrespro.ru>
cc: James Hilliard <james.hilliard1@gmail.com>,
        pgsql-hackers@lists.postgresql.org,
        Thomas Munro <thomas.munro@gmail.com>
Subject: Re: [PATCH 1/1] Fix detection of pwritev support for OSX.
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Comments: In-reply-to Sergey Shinderuk <s.shinderuk@postgrespro.ru>
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Sergey Shinderuk <s.shinderuk@postgrespro.ru> writes:
> If I run the Homebrew installer, it says that it's going to install the 
> Command Line Tools. I don't know why it needs them, all the tools are 
> there already. I thought that CLT is a lighter-weight option when you 
> don't want the full Xcode installation, but Homebrew requires them anyway.

BTW, reading [1] I see

    You can install Xcode, the CLT, or both; Homebrew supports all three
    configurations.

So I'm not sure why you got that prompt, unless you were using a formula
that knew you were going to need bison.

			regards, tom lane

[1] https://docs.brew.sh/Installation#3