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macOS Tahoe 26 support #20064

@milksense

Description

@milksense

brew doctor output

/opt/homebrew/Library/Homebrew/macos_version.rb:53:in 'MacOSVersion#initialize': unknown or unsupported macOS version: "26.0" (MacOSVersion::Error)
	from /opt/homebrew/Library/Homebrew/os/mac.rb:44:in 'Class#new'
	from /opt/homebrew/Library/Homebrew/os/mac.rb:44:in 'OS::Mac.full_version'
	from /opt/homebrew/Library/Homebrew/os/mac.rb:32:in 'OS::Mac.version'
	from /opt/homebrew/Library/Homebrew/os.rb:60:in '<module:OS>'
	from /opt/homebrew/Library/Homebrew/os.rb:7:in '<main>'
	from <internal:/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:37:in 'Kernel#require'
	from <internal:/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:37:in 'Kernel#require'
	from /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/gems/3.4.0/gems/bootsnap-1.18.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in 'Kernel#require'
	from /opt/homebrew/Library/Homebrew/global.rb:138:in '<top (required)>'
	from /opt/homebrew/Library/Homebrew/brew.rb:18:in 'Kernel#require_relative'
	from /opt/homebrew/Library/Homebrew/brew.rb:18:in '<main>'

Verification

  • My "brew doctor output" above says Your system is ready to brew. and am still able to reproduce my issue.
  • I ran brew update twice and am still able to reproduce my issue.
  • This issue's title and/or description do not reference a single formula e.g. brew install wget. If they do, open an issue at https://github.com/Homebrew/homebrew-core/issues/new/choose instead.

brew config output

/opt/homebrew/Library/Homebrew/macos_version.rb:53:in 'MacOSVersion#initialize': unknown or unsupported macOS version: "26.0" (MacOSVersion::Error)
	from /opt/homebrew/Library/Homebrew/os/mac.rb:44:in 'Class#new'
	from /opt/homebrew/Library/Homebrew/os/mac.rb:44:in 'OS::Mac.full_version'
	from /opt/homebrew/Library/Homebrew/os/mac.rb:32:in 'OS::Mac.version'
	from /opt/homebrew/Library/Homebrew/os.rb:60:in '<module:OS>'
	from /opt/homebrew/Library/Homebrew/os.rb:7:in '<main>'
	from <internal:/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:37:in 'Kernel#require'
	from <internal:/opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:37:in 'Kernel#require'
	from /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/gems/3.4.0/gems/bootsnap-1.18.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in 'Kernel#require'
	from /opt/homebrew/Library/Homebrew/global.rb:138:in '<top (required)>'
	from /opt/homebrew/Library/Homebrew/brew.rb:18:in 'Kernel#require_relative'
	from /opt/homebrew/Library/Homebrew/brew.rb:18:in '<main>'

What were you trying to do (and why)?

brew *

What happened (include all command output)?

'MacOSVersion#initialize': unknown or unsupported macOS version: "26.0" (MacOSVersion::Error)

What did you expect to happen?

Successful execution :)

Step-by-step reproduction instructions (by running brew commands)

brew *

Exclude brew update

OS version

Version 26.0 Beta (25A5279m)

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