brew update -> No developer tools installed.

[lukepuplett]

Hello, I'm new to using a Mac. I setup Homebrew some weeks ago and used it to install something (I can't remember what), so it was working the last time I looked, a little while ago.

I went to install Node.js using brew install node and it failed with the message below.

Note This weekend I updated to Monterey via the normal OS update thing in macOS.

So I ran brew update and I see the same message (printed once).

Warning: You are using macOS 12.
We do not provide support for this pre-release version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
pre-release version.

Error: No developer tools installed.
Install the Command Line Tools:
  xcode-select --install

Error: 'git' must be installed and in your PATH!

I've never ran brew update before, so maybe it never worked and the Monterey thing and the macOS 12 warning are a coincidence. Here's my output from brew config.

HOMEBREW_VERSION: >=2.5.0 (shallow or no git repository)
ORIGIN: (none)
HEAD: (none)
Last commit: never
Core tap ORIGIN: (none)
Core tap HEAD: (none)
Core tap last commit: never
Core tap branch: (none)
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 2.6.8 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: octa-core 64-bit arm_firestorm_icestorm
Clang: N/A
Git: N/A
Curl: 7.77.0 => /usr/bin/curl
macOS: 12.0.1-arm64
CLT: N/A
Xcode: N/A
Rosetta 2: false

Is this a problem, or expected and I need to install some that other stuff first?

Thanks

[carlocab]

Did you upgrade to macOS 12 recently? Running the Homebrew install script would have installed the Command Line Tools (CLT), but upgrading your OS often removes CLT installations.

Run

xcode-select --install

and your next brew update should work.

[alextsil]

about 20min

[l3v1tat3]

Mine took about 10 minutes to download & about 5 minutes to install. Although, it started at 30+ hours! 😨

[jayanthmahadesh]

thanks

[Hackbabz69]

mine is showing 100 hours

[codewithyeow]

mine is showing 77 hours lol

[alifornia]

Homebrew bottles (binary package) depend on Command Line Tools (CLT) for installation. After an upgrade, CLT should be reinstalled yet it does not mean xcode installation. To check if you have CLT installed?

brew config

If you found CLT: N\A. Follow @carlocab's answer. Run: xcode-select --install, ...

[carlocab]

To check if you have CLT installed?

brew doctor will also tell you if you don't have the CLT installed. After you've installed the CLT, you should also run brew doctor anyway to check that your CLT installation was successful. (xcode-select --install has been known to occasionally install the wrong version.)