Install Homebrew on Mac M2

[AlexandreKang]

Output of brew config

zsh: command not found: brew

Output of brew doctor

zsh: command not found: brew

Description of issue

I can't install Homebrew. I don't know why it asks for Git while others do not need to install git when installing Homebrew. I read the blogs and watch YouTube videos but can't find a solution.

Last login: Sun Mar 19 16:21:07 on console
alexandrekang@Alexandres-MacBook-Air ~ % /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
==> Checking for sudo access (which may request your password)...
Password:
==> This script will install:
/opt/homebrew/bin/brew
/opt/homebrew/share/doc/homebrew
/opt/homebrew/share/man/man1/brew.1
/opt/homebrew/share/zsh/site-functions/_brew
/opt/homebrew/etc/bash_completion.d/brew
/opt/homebrew

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /usr/sbin/chown -R alexandrekang:admin /opt/homebrew
Unexpected Git version: ''!
You must install Git before installing Homebrew. See:
https://docs.brew.sh/Installation

Thank you

[p-linnane]

You need the Xcode Command Line Tools before you install brew. Run xcode-select --install first and try again.

[AlexandreKang]

It prints

alexandrekang@Alexandres-MacBook-Air ~ % echo $path
/usr/local/bin /System/Cryptexes/App/usr/bin /usr/bin /bin /usr/sbin /sbin

[gromgit]

Now try installing Homebrew again.

[AlexandreKang]

The output:

alexandrekang@Alexandres-MacBook-Air ~ % /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
==> Checking for `sudo` access (which may request your password)...
Password:
==> This script will install:
/opt/homebrew/bin/brew
/opt/homebrew/share/doc/homebrew
/opt/homebrew/share/man/man1/brew.1
/opt/homebrew/share/zsh/site-functions/_brew
/opt/homebrew/etc/bash_completion.d/brew
/opt/homebrew

Press RETURN/ENTER to continue or any other key to abort:
==> /usr/bin/sudo /usr/sbin/chown -R alexandrekang:admin /opt/homebrew
Unexpected Git version: ''!
You must install Git before installing Homebrew. See:
  https://docs.brew.sh/Installation
alexandrekang@Alexandres-MacBook-Air ~ % 

[gromgit]

Sorry, thinking of the wrong shell. Do this:

PS4='+$BASH_SOURCE> ' script /tmp/shell.log /bin/bash -xli -c exit

then post the output of:

grep PATH= /tmp/shell.log

[AlexandreKang]

The output:

alexandrekang@Alexandres-MacBook-Air ~ % grep PATH= /tmp/shell.log
+/etc/profile> eval 'PATH="/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin";' export 'PATH;'
++/etc/profile> PATH=/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin

[splaney]

Maybe someone with more experience can chime in here, but I found a bandaid solution that worked for me.

Opened up my first mac in a few years today and experienced the exact same thing with it not recognizing the git install from XCode, even though zsh was telling me git was installed.

Since the homebrew install script is a bash script, I opened a bash terminal and saw:

me@my-MBP ~ % bash
bash-3.2$ git
bash: /usr/local/bin/git: Bad CPU type in executable

A google search led me to this stackexchange post.

I then ran the following:

softwareupdate --install-rosetta
arch -x86_64 zsh
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

However, now you have brew installed in x86, not ARM. I then found this, which after following those directions (new non-x86 terminal) I was able to install homebrew. Make sure to follow the instructions to add it to the path.

I also did the following afterwards:

me@my-MBP ~ % which git
/usr/local/bin/git
me@my-MBP ~ % rm -rf /usr/local/bin/git
me@my-MBP ~ % which git
/usr/bin/git

To remove an x64 git that was clobbering my attempts to use ARM apps.

And, ta-da! Good to go! (for now, it seems)

Sorry if I missed a few steps, was just as frustrated trying to get it all working!

[Anto1368]

I had the same problem.
Fixed deleting the git under /usr/local/bin/

[AlexandreKang]

Thanks a lot @Anto1368 ! It worked

[gromgit]

@AlexandreKang Just to confirm, you had a /usr/local/bin/git binary?

[AlexandreKang]

@gromgit yes

[StevenRoan]

Also come across this issue.

TL:DR, ls -alh /usr/local/bin/git and get the link of your previously brew-installed git folder and rm it.

My path is rm -rf /usr/local/Cellar/git

root cause----

The root cause is the homebrew install script will try to use /usr/local/bin/git, which is bad CPU in type in the migration case.

After rm it, brew will use the one in /usr/bin/git which is installed by x-code

[saikumar305]

Still facing the same issue on Mac M2 , didn't find any solution