Class: Homebrew::Diagnostic::Checks Private

Inherits:
Object
  • Object
show all
Includes:
OS::Linux::Diagnostic::Checks, OS::Mac::Diagnostic::Checks, SystemCommand::Mixin, Utils::Output::Mixin
Defined in:
diagnostic.rb

Overview

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

Diagnostic checks.

HELPERS collapse

Instance Method Summary collapse

Methods included from Utils::Output::Mixin

#issue_reporting_message, #odebug, #odeprecated, #odie, #odisabled, #ofail, #oh1, #oh1_title, #ohai, #ohai_title, #onoe, #opoo, #opoo_outside_github_actions, #opoo_without_github_actions_annotation, #pretty_cannot_install, #pretty_deprecated, #pretty_disabled, #pretty_duration, #pretty_install_status, #pretty_installed, #pretty_uninstalled, #pretty_unmarked, #pretty_upgradable, #pretty_warning

Methods included from SystemCommand::Mixin

#system_command, #system_command!

Methods included from OS::Linux::Diagnostic::Checks

#check_for_symlinked_home, #check_gcc_dependent_linkage, #check_glibc_minimum_version, #check_glibc_next_version, #check_glibc_version, #check_kernel_minimum_version, #check_linux_sandbox, #check_linuxbrew_bottle_domain, #check_linuxbrew_core, #check_supported_architecture, #check_tmpdir_executable, #check_umask_not_zero

Methods included from OS::Mac::Diagnostic::Checks

#check_cask_quarantine_support, #check_clt_minimum_version, #check_clt_up_to_date, #check_filesystem_case_sensitive, #check_for_gettext, #check_for_iconv, #check_for_multiple_volumes, #check_for_non_prefixed_findutils, #check_for_unsupported_macos, #check_if_supported_sdk_available, #check_if_xcode_needs_clt_installed, #check_pkgconf_macos_sdk_mismatch, #check_xcode_license_approved, #check_xcode_minimum_version, #check_xcode_prefix, #check_xcode_prefix_exists, #check_xcode_select_path, #check_xcode_up_to_date

Constructor Details

#initialize(verbose: true) ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

  • verbose (Boolean) (defaults to: true) 


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# File 'diagnostic.rb', line 65

def initialize(verbose: true)
  @verbose = verbose
  @found = T.let([], T::Array[String])
  @seen_prefix_bin = T.let(false, T::Boolean)
  @seen_prefix_sbin = T.let(false, T::Boolean)
  @user_path_1_done = T.let(false, T::Boolean)
  @non_core_taps = T.let([], T.nilable(T::Array[Tap]))
end

Instance Method Details

#__check_linked_brew!(formula) ⇒ Boolean

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:

  • (Boolean) 


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# File 'diagnostic.rb', line 945

def __check_linked_brew!(formula)
  formula.installed_prefixes.each do |prefix|
    prefix.find do |src|
      next if src == prefix

      dst = HOMEBREW_PREFIX + src.relative_path_from(prefix)
      return true if dst.symlink? && src == Utils::Path.resolved_path(dst)
    end
  end

  false
end

#__check_stray_files(dir, pattern, allow_list, message) ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 260

def __check_stray_files(dir, pattern, allow_list, message)
  return unless File.directory?(dir)

  files = Dir.chdir(dir) do
    (Dir.glob(pattern) - Dir.glob(allow_list))
      .select { |f| File.file?(f) && !File.symlink?(f) }
      .map do |f|
        f.sub!(%r{/.*}, "/*") unless @verbose
        File.join(dir, f)
      end
      .sort.uniq
  end
  return if files.empty?

  append_indented_list files, message
end

#__tap_git_status(tap, path) ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 1072

def __tap_git_status(tap, path)
  return unless path.exist?

  status = path.cd do
    Utils.popen_read_text(Utils::Git.git, "status", "--untracked-files=all", "--porcelain", err: File::NULL)
  end
  return if status.blank?

  message = <<~EOS
    You have uncommitted modifications to #{tap}.
  EOS
  commands = ["git -C \"#{path}\" stash -u && git -C \"#{path}\" clean -d -f"]
  remediation = Finding::Remediation.new(
    text:     append_indented_list(commands, <<~EOS),
      If this is a surprise to you, then you should stash these modifications.
      Stashing returns Homebrew to a pristine state but can be undone
      should you later need to do so for some reason.

    EOS
    commands:,
  )

  modified = status.split("\n").map(&:strip)
  message += append_indented_list modified, <<~EOS
    Uncommitted files:

  EOS
  Finding.new(message, affects: modified, remediation:) if message.present?
end

#add_info(*args) ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.

Parameters:

  • args (T.anything) 


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# File 'diagnostic.rb', line 107

def add_info(*args)
  ohai(*args) if @verbose
end

#all ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1623

def all
  methods.map(&:to_s).grep(/^check_/).sort
end

#append_indented_list(list, string) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 86

def append_indented_list(list, string)
  list.reduce(string.dup) { |acc, elem| acc << "  #{elem}\n" }
      .freeze
end

#broken_tap(tap) ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 222

def broken_tap(tap)
  return unless Utils::Git.available?

  repo = GitRepository.new(HOMEBREW_REPOSITORY)
  return unless repo.git_repository?

  commands = ["rm -rf \"#{tap.path}\"",
              "brew tap #{tap.name}"]
  finding = Finding.new(
    "#{tap.full_name} was not tapped properly!",
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You can solve this by tapping again:
      EOS
      commands:,
    ),
  )

  return finding if tap.remote.blank?

  tap_head = tap.git_head
  return finding if tap_head.blank?
  return if tap_head != repo.head_ref

  finding
end

#build_error_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 173

def build_error_checks
  supported_configuration_checks + build_from_source_checks
end

#build_from_source_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 161

def build_from_source_checks
  [].freeze
end

#cask_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1628

def cask_checks
  all.grep(/^check_cask_/)
end

#check_access_directories ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 480

def check_access_directories
  not_writable_dirs =
    Keg.must_be_writable_directories.select(&:exist?)
       .reject(&:writable?)
  return if not_writable_dirs.empty?

  commands = ["sudo chown -R #{current_user} #{not_writable_dirs.join(" ")}",
              "chmod u+w #{not_writable_dirs.join(" ")}"]
  Finding.new(
    append_indented_list(not_writable_dirs, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You should change the ownership of these directories to your user,
        and make sure that you have write permission.
      EOS
      commands:,
    ),
  )
end

#check_brew_git_origin ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 732

def check_brew_git_origin
  repo = GitRepository.new(HOMEBREW_REPOSITORY)
  examine_git_origin(repo, Homebrew::EnvConfig.brew_git_remote)
end

#check_brew_path ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 523

def check_brew_path
  brew = which("brew", paths)
  return if brew.nil? || File.identical?(brew, HOMEBREW_BREW_FILE)

  Finding.new(
    <<~EOS,
      Another `brew` shadows this Homebrew installation in your PATH:
        #{brew}

      This may be a helper, wrapper or another Homebrew installation.
    EOS
    remediation: path_remediation,
  )
end

#check_cask_corrupt_dirs ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1418

def check_cask_corrupt_dirs
  corrupt = Cask::Caskroom.corrupt_cask_dirs
  return if corrupt.empty?

  commands = corrupt.map { |token| "brew reinstall --cask --force #{token}" }
  Finding.new(
    append_indented_list(corrupt.map { |token| "#{Cask::Caskroom.path}/#{token}" }, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        To fix this, run:
      EOS
      commands:,
    ),
  )
end

#check_cask_deprecated_disabled ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1037

def check_cask_deprecated_disabled
  deprecated_or_disabled = Cask::Caskroom.casks.select(&:deprecated?)
  deprecated_or_disabled += Cask::Caskroom.casks.select(&:disabled?)
  return if deprecated_or_disabled.empty?

  Finding.new(
    "Some installed casks are deprecated or disabled.",
    affects:     deprecated_or_disabled.map(&:token),
    remediation: append_indented_list(deprecated_or_disabled.sort_by(&:token).uniq, <<~EOS),
      You should find replacements for the following casks:

    EOS
  )
end

#check_cask_environment_variables ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1472

def check_cask_environment_variables
  environment_variables = %w[
    RUBYLIB
    RUBYOPT
    RUBYPATH
    RBENV_VERSION
    CHRUBY_VERSION
    GEM_HOME
    GEM_PATH
    BUNDLE_PATH
    PATH
    SHELL
    HOMEBREW_CASK_OPTS
  ]

  locale_variables = ENV.keys.grep(/^(?:LC_\S+|LANG|LANGUAGE)\Z/).sort

  cask_environment_variables = (locale_variables + environment_variables).sort.filter_map do |var|
    next unless ENV.key?(var)

    %Q(#{var}="#{Utils::Shell.sh_quote(ENV.fetch(var))}")
  end
  add_info "Cask Environment Variables:", cask_environment_variables

  nil
end

#check_cask_install_location ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1375

def check_cask_install_location
  locations = Dir.glob(HOMEBREW_CELLAR.join("brew-cask", "*")).reverse
  return if locations.empty?

  Finding.new(
    append_indented_list(locations, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     <<~EOS,
        Run `brew uninstall --force brew-cask`.
      EOS
      commands: ["brew uninstall --force brew-cask"],
    ),
  )
end

#check_cask_load_path ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1463

def check_cask_load_path
  paths = $LOAD_PATH.map { user_tilde(it) }

  add_info "$LOAD_PATHS", paths.presence || none_string

  Finding.new("$LOAD_PATH is empty") if paths.blank?
end

#check_cask_software_versions ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1368

def check_cask_software_versions
  add_info "Homebrew Version", HOMEBREW_VERSION

  nil
end

#check_cask_staging_location ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1393

def check_cask_staging_location
  # Skip this check when running CI since the staging path is not writable for security reasons
  return if GitHub::Actions.env_set?

  path = Cask::Caskroom.path

  add_info "Cask Staging Location", user_tilde(path.to_s)

  return if !path.exist? || path.writable?

  commands = ["sudo chown -R #{current_user} #{user_tilde(path.to_s)}"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        To fix this, run:
      EOS
      commands:,
    ),
  )
end

#check_cask_taps ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1438

def check_cask_taps
  error_tap_paths = []

  taps = (Tap.to_a + [CoreCaskTap.instance]).uniq

  taps_info = taps.filter_map do |tap|
    cask_count = begin
      tap.cask_files.count
    rescue
      error_tap_paths << tap.path
      0
    end
    next if cask_count.zero?

    "#{tap.path} (#{Utils.pluralize("cask", cask_count, include_count: true)})"
  end
  add_info "Cask Taps:", taps_info

  taps_string = Utils.pluralize("tap", error_tap_paths.count)
  return unless error_tap_paths.present?

  Finding.new("Unable to read from cask #{taps_string}: #{Utils::Text.to_sentence(error_tap_paths)}")
end

#check_cask_xattr ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1500

def check_cask_xattr
  # If quarantine is not available, a warning is already shown by check_cask_quarantine_support so just return
  return unless Cask::Quarantine.available?
  return Finding.new("Unable to find `xattr`.") unless File.exist?("/usr/bin/xattr")

  result = system_command "/usr/bin/xattr", args: ["-h"]

  return if result.status.success?

  if result.stderr.include? "ImportError: No module named pkg_resources"
    result = Utils.popen_read "/usr/bin/python", "--version", err: :out

    if result.include? "Python 2.7"
      commands = ["sudo /usr/bin/python -m pip install -I setuptools"]
      Finding.new(
        <<~EOS,
        remediation: Finding::Remediation.new(
          text:     append_indented_list(commands, <<~EOS),
            To this fix, reinstall macOS or run:
          EOS
          commands:,
        ),
      )
    else
      commands = ["defaults write com.apple.versioner.python Version 2.7"]
      Finding.new(
        <<~EOS,
        remediation: Finding::Remediation.new(
          text:     append_indented_list(commands, <<~EOS),
            To fix this, run:
          EOS
          commands:,
        ),
      )
    end
  elsif result.stderr.include? "pkg_resources.DistributionNotFound"
    Finding.new("Your Python installation is unable to find `xattr`.")
  else
    Finding.new("unknown xattr error: #{result.stderr.split("\n").last}")
  end
end

#check_casktap_integrity ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 763

def check_casktap_integrity
  core_cask_tap = CoreCaskTap.instance
  return unless core_cask_tap.installed?

  broken_tap(core_cask_tap) ||
    examine_git_origin(core_cask_tap.git_repository, core_cask_tap.remote || core_cask_tap.default_remote)
end

#check_coretap_integrity ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 751

def check_coretap_integrity
  core_tap = CoreTap.instance
  unless core_tap.installed?
    return unless EnvConfig.no_install_from_api?

    core_tap.ensure_installed!
  end

  broken_tap(core_tap) || examine_git_origin(core_tap.git_repository, Homebrew::EnvConfig.core_git_remote)
end

#check_deleted_formula ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1261

def check_deleted_formula
  kegs = Keg.all

  deleted_formulae = kegs.filter_map do |keg|
    tap = keg.tab.tap
    tap_keg_name = tap ? "#{tap}/#{keg.name}" : keg.name

    loadable = [
      Formulary::FromAPILoader,
      Formulary::FromTapLoader,
      Formulary::FromNameLoader,
    ].any? do |loader_class|
      loader = begin
        loader_class.try_new(tap_keg_name, warn: false)
      rescue TapFormulaAmbiguityError => e
        e.loaders.first
      end

      loader.instance_of?(Formulary::FromTapLoader) ? loader.path.exist? : loader.present?
    end

    keg.name unless loadable
  end.uniq

  return if deleted_formulae.blank?

  Finding.new(
    <<~EOS,
    affects:     deleted_formulae,
    remediation: append_indented_list(deleted_formulae, <<~EOS),
      You should find replacements for the following formulae:

    EOS
  )
end

#check_deprecated_cask_taps ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1348

def check_deprecated_cask_taps
  tapped_caskroom_taps = ::Tap.select { |t| t.user == "caskroom" || t.name == "phinze/cask" }
                              .map(&:name)
  return if tapped_caskroom_taps.empty?

  commands = ["brew untap #{tapped_caskroom_taps.join(" ")}"]
  Finding.new(
    append_indented_list(tapped_caskroom_taps, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Please remove it by running:
      EOS
      commands:,
    ),
  )
end

#check_deprecated_disabled ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1020

def check_deprecated_disabled
  return unless HOMEBREW_CELLAR.exist?

  deprecated_or_disabled = Formula.installed.select { |f| f.deprecated? || f.disabled? }
  return if deprecated_or_disabled.empty?

  Finding.new(
    "Some installed formulae are deprecated or disabled.",
    affects:     deprecated_or_disabled.map(&:full_name),
    remediation: append_indented_list(deprecated_or_disabled.sort_by(&:full_name).uniq, <<~EOS),
      You should find replacements for the following formulae:

    EOS
  )
end

#check_deprecated_official_taps ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 820

def check_deprecated_official_taps
  tapped_deprecated_taps =
    Tap.select(&:official?).map(&:repository) & DEPRECATED_OFFICIAL_TAPS

  # TODO: remove this once it's no longer in the default GitHub Actions image
  tapped_deprecated_taps -= ["bundle"] if GitHub::Actions.env_set?

  return if tapped_deprecated_taps.empty?

  Finding.new(
    append_indented_list(tapped_deprecated_taps.map { |name| "Homebrew/homebrew-#{name}" }, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     <<~EOS,
        Untap them with `brew untap`.
      EOS
      commands: ["brew untap"],
    ),
  )
end

#check_exist_directories ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 458

def check_exist_directories
  return if HOMEBREW_PREFIX.writable?

  not_exist_dirs = Keg.must_exist_directories.reject(&:exist?)
  return if not_exist_dirs.empty?

  commands = ["sudo mkdir -p #{not_exist_dirs.join(" ")}",
              "sudo chown -R #{current_user} #{not_exist_dirs.join(" ")}"]
  Finding.new(
    append_indented_list(not_exist_dirs, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You should create these directories and change their ownership to your user.
      EOS
      commands:,
    ),
  )
end

#check_for_broken_symlinks ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 413

def check_for_broken_symlinks
  broken_symlinks = []

  Keg.must_exist_subdirectories.each do |d|
    next unless d.directory?

    d.find do |path|
      broken_symlinks << path if path.symlink? && !Utils::Path.resolved_path_exists?(path)
    end
  end
  return if broken_symlinks.empty?

  Finding.new(
    append_indented_list(broken_symlinks, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     <<~EOS,
        Remove them with `brew cleanup`
      EOS
      commands: ["brew cleanup"],
    ),
  )
end

#check_for_duplicate_casks ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1587

def check_for_duplicate_casks
  return if ENV["HOMEBREW_TEST_BOT"].present?

  core_cask_names = CoreCaskTap.instance.cask_tokens
  shadowed_cask_full_names = non_core_taps.flat_map do |tap|
    tap_cask_names = tap.cask_tokens.map { |s| s.delete_prefix("#{tap.name}/") }
    (core_cask_names & tap_cask_names).map { |f| "#{tap.name}/#{f}" }
  end.compact.sort
  return if shadowed_cask_full_names.empty?

  installed_cask_tap_names = Cask::Caskroom.casks.filter_map(&:tap).uniq.reject(&:official?).map(&:name)
  shadowed_cask_tap_names = shadowed_cask_full_names.filter_map { |s| Utils.tap_from_full_name(s) }.uniq
  unused_shadowed_cask_tap_names = (shadowed_cask_tap_names - installed_cask_tap_names).sort

  remediation = if unused_shadowed_cask_tap_names.empty?
    "Their taps are in use, so you must use these full names throughout Homebrew.\n"
  else
    commands = ["brew untap #{unused_shadowed_cask_tap_names.join(" ")}"]
    Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Some of these can be resolved with:
      EOS
      commands:,
    )
  end

  Finding.new(
    append_indented_list(shadowed_cask_full_names, <<~EOS),
      The following casks have the same name as core casks:
    EOS
    affects:     shadowed_cask_full_names,
    remediation:,
  )
end

#check_for_duplicate_formulae ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1552

def check_for_duplicate_formulae
  return if ENV["HOMEBREW_TEST_BOT"].present?

  core_formula_names = CoreTap.instance.formula_names
  shadowed_formula_full_names = non_core_taps.flat_map do |tap|
    tap_formula_names = tap.formula_names.map { |s| s.delete_prefix("#{tap.name}/") }
    (core_formula_names & tap_formula_names).map { |f| "#{tap.name}/#{f}" }
  end.compact.sort
  return if shadowed_formula_full_names.empty?

  installed_formula_tap_names = Formula.installed.filter_map(&:tap).uniq.reject(&:official?).map(&:name)
  shadowed_formula_tap_names = shadowed_formula_full_names.filter_map { |s| Utils.tap_from_full_name(s) }.uniq
  unused_shadowed_formula_tap_names = (shadowed_formula_tap_names - installed_formula_tap_names).sort

  remediation = if unused_shadowed_formula_tap_names.empty?
    "Their taps are in use, so you must use these full names throughout Homebrew."
  else
    commands = ["brew untap #{unused_shadowed_formula_tap_names.join(" ")}"]
    Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Some of these can be resolved with:
      EOS
      commands:,
    )
  end

  Finding.new(
    append_indented_list(shadowed_formula_full_names, <<~EOS),
      The following formulae have the same name as core formulae:
    EOS
    remediation:,
  )
end

#check_for_external_cmd_name_conflict ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1190

def check_for_external_cmd_name_conflict
  cmds = Commands.tap_cmd_directories.flat_map { |p| Dir["#{p}/brew-*"] }.uniq
  cmds = cmds.select { |cmd| File.file?(cmd) && File.executable?(cmd) }
  cmd_map = {}
  cmds.each do |cmd|
    cmd_name = File.basename(cmd, ".rb")
    cmd_map[cmd_name] ||= []
    cmd_map[cmd_name] << cmd
  end
  cmd_map.reject! { |_cmd_name, cmd_paths| cmd_paths.size == 1 }
  return if cmd_map.empty?

  if ENV["CI"].present? && cmd_map.keys.length == 1 &&
     cmd_map.keys.first == "brew-test-bot"
    return
  end

  message = "You have external commands with conflicting names.\n"
  cmd_map.each do |cmd_name, cmd_paths|
    message += append_indented_list cmd_paths, <<~EOS
      Found command `#{cmd_name}` in the following places:
    EOS
  end

  Finding.new(message)
end

#check_for_git ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 655

def check_for_git
  return if Utils::Git.available?

  commands = ["brew install git"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You may want to install Git:
      EOS
      commands:,
    ),
  )
end

#check_for_installed_developer_tools ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 250

def check_for_installed_developer_tools
  return if DevelopmentTools.installed?

  Finding.new(
    "No developer tools installed.\n",
    remediation: DevelopmentTools.installation_instructions,
  )
end

#check_for_nix_homebrew ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 738

def check_for_nix_homebrew
  return unless OS.nix_managed_homebrew?

  Finding.new(
    <<~EOS,
      Your Homebrew installation is managed by Nix.
      Homebrew does not support Nix-managed installations.
    EOS
    tier: 3,
  )
end

#check_for_non_prefixed_coreutils ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1103

def check_for_non_prefixed_coreutils
  coreutils = Formula["coreutils"]
  return unless coreutils.any_version_installed?

  gnubin = %W[#{coreutils.opt_libexec}/gnubin #{coreutils.libexec}/gnubin]
  return unless paths.intersect?(gnubin)

  Finding.new(
    <<~EOS,
      Putting non-prefixed coreutils in your path can cause GMP builds to fail.
    EOS
  )
rescue FormulaUnavailableError
  nil
end

#check_for_other_frameworks ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 959

def check_for_other_frameworks
  # Other frameworks that are known to cause problems when present
  frameworks_to_check = %w[
    expat.framework
    libexpat.framework
    libcurl.framework
  ]
  frameworks_found = frameworks_to_check
                     .map { |framework| "/Library/Frameworks/#{framework}" }
                     .select { |framework| File.exist? framework }
  return if frameworks_found.empty?

  Finding.new(
    <<~EOS,
    remediation: append_indented_list(frameworks_found, <<~EOS),
      To compile CMake, you may wish to move these out of the way:
    EOS
  )
end

#check_for_pydistutils_cfg_in_home ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1120

def check_for_pydistutils_cfg_in_home
  return unless File.exist? "#{Dir.home}/.pydistutils.cfg"

  Finding.new(
    <<~EOS,
      A '.pydistutils.cfg' file was found in $HOME, which may cause Python
      builds to fail. See:
        #{Formatter.url("https://bugs.python.org/issue6138")}
        #{Formatter.url("https://bugs.python.org/issue4655")}
    EOS
    links: [
      "https://bugs.python.org/issue6138",
      "https://bugs.python.org/issue4655",
    ],
  )
end

#check_for_stray_dylibs ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 278

def check_for_stray_dylibs
  # Dylibs which are generally OK should be added to this list,
  # with a short description of the software they come with.
  allow_list = [
    "libfuse.2.dylib", # MacFuse
    "libfuse3.*.dylib", # MacFuse
    "libfuse_ino64.2.dylib", # MacFuse
    "libfuse-t*.dylib", # FUSE-T
    "libmacfuse_i32.2.dylib", # OSXFuse MacFuse compatibility layer
    "libmacfuse_i64.2.dylib", # OSXFuse MacFuse compatibility layer
    "libosxfuse_i32.2.dylib", # OSXFuse
    "libosxfuse_i64.2.dylib", # OSXFuse
    "libosxfuse.2.dylib", # OSXFuse
    "libTrAPI.dylib", # TrAPI/Endpoint Security VPN
    "libntfs-3g.*.dylib", # NTFS-3G
    "libntfs.*.dylib", # NTFS-3G
    "libublio.*.dylib", # NTFS-3G
    "libUFSDNTFS.dylib", # Paragon NTFS
    "libUFSDExtFS.dylib", # Paragon ExtFS
    "libecomlodr.dylib", # Symantec Endpoint Protection
    "libsymsea*.dylib", # Symantec Endpoint Protection
    "sentinel.dylib", # SentinelOne
    "sentinel-*.dylib", # SentinelOne
    "libASAF.dylib", # Apple Immersive Audio SDK
  ]

  msg = __check_stray_files "/usr/local/lib", "*.dylib", allow_list, <<~EOS
    Unbrewed dylibs were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae and may need to be deleted.

    Unexpected dylibs:
  EOS
  Finding.new(msg) if msg.present?
end

#check_for_stray_headers ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 391

def check_for_stray_headers
  allow_list = [
    "fuse.h", # MacFuse
    "fuse/**/*.h", # MacFuse
    "fuse3/**/*.h", # MacFuse
    "macfuse/**/*.h", # OSXFuse MacFuse compatibility layer
    "osxfuse/**/*.h", # OSXFuse
    "ntfs/**/*.h", # NTFS-3G
    "ntfs-3g/**/*.h", # NTFS-3G
  ]

  msg = __check_stray_files "/usr/local/include", "**/*.h", allow_list, <<~EOS
    Unbrewed header files were found in /usr/local/include.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae and may need to be deleted.

    Unexpected header files:
  EOS
  Finding.new(msg) if msg.present?
end

#check_for_stray_las ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 368

def check_for_stray_las
  allow_list = [
    "libfuse.la", # MacFuse
    "libfuse_ino64.la", # MacFuse
    "libosxfuse_i32.la", # OSXFuse
    "libosxfuse_i64.la", # OSXFuse
    "libosxfuse.la", # OSXFuse
    "libntfs-3g.la", # NTFS-3G
    "libntfs.la", # NTFS-3G
    "libublio.la", # NTFS-3G
  ]

  msg = __check_stray_files "/usr/local/lib", "*.la", allow_list, <<~EOS
    Unbrewed '.la' files were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae and may need to be deleted.

    Unexpected '.la' files:
  EOS
  Finding.new(msg) if msg.present?
end

#check_for_stray_pcs ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 344

def check_for_stray_pcs
  # Package-config files which are generally OK should be added to this list,
  # with a short description of the software they come with.
  allow_list = [
    "fuse.pc", # OSXFuse/MacFuse
    "fuse3.pc", # OSXFuse/MacFuse
    "fuse-t.pc", # FUSE-T
    "macfuse.pc", # OSXFuse MacFuse compatibility layer
    "osxfuse.pc", # OSXFuse
    "libntfs-3g.pc", # NTFS-3G
    "libublio.pc", # NTFS-3G
  ]

  msg = __check_stray_files "/usr/local/lib/pkgconfig", "*.pc", allow_list, <<~EOS
    Unbrewed '.pc' files were found in /usr/local/lib/pkgconfig.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae and may need to be deleted.

    Unexpected '.pc' files:
  EOS
  Finding.new(msg) if msg.present?
end

#check_for_stray_static_libs ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 315

def check_for_stray_static_libs
  # Static libs which are generally OK should be added to this list,
  # with a short description of the software they come with.
  allow_list = [
    "libfuse-t*.a", # FUSE-T
    "libfuse3.a", # FUSE-T
    "libntfs-3g.a", # NTFS-3G
    "libntfs.a", # NTFS-3G
    "libublio.a", # NTFS-3G
    "libappfirewall.a", # Symantec Endpoint Protection
    "libautoblock.a", # Symantec Endpoint Protection
    "libautosetup.a", # Symantec Endpoint Protection
    "libconnectionsclient.a", # Symantec Endpoint Protection
    "liblocationawareness.a", # Symantec Endpoint Protection
    "libpersonalfirewall.a", # Symantec Endpoint Protection
    "libtrustedcomponents.a", # Symantec Endpoint Protection
  ]

  msg = __check_stray_files "/usr/local/lib", "*.a", allow_list, <<~EOS
    Unbrewed static libraries were found in /usr/local/lib.
    If you didn't put them there on purpose they could cause problems when
    building Homebrew formulae and may need to be deleted.

    Unexpected static libraries:
  EOS
  Finding.new(msg) if msg.present?
end

#check_for_symlinked_cellar ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 610

def check_for_symlinked_cellar
  return unless HOMEBREW_CELLAR.exist?
  return unless HOMEBREW_CELLAR.symlink?

  Finding.new(
    <<~EOS,
      Symlinked Cellars can cause problems.
      Your Homebrew Cellar is a symlink: #{HOMEBREW_CELLAR}
                      which resolves to: #{HOMEBREW_CELLAR.realpath}

      The recommended Homebrew installations are either:
      (A) Have Cellar be a real directory inside of your `$HOMEBREW_PREFIX`
      (B) Symlink "bin/brew" into your prefix, but don't symlink "Cellar".

      Older installations of Homebrew may have created a symlinked Cellar, but this can
      cause problems when two formulae install to locations that are mapped on top of each
      other during the linking step.
    EOS
  )
end

#check_for_tap_ruby_files_locations ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1218

def check_for_tap_ruby_files_locations
  bad_tap_files = {}
  Tap.installed.each do |tap|
    unused_formula_dirs = tap.potential_formula_dirs - [tap.formula_dir]
    unused_formula_dirs.each do |dir|
      next unless dir.exist?

      dir.children.each do |path|
        next if path.extname != ".rb"

        bad_tap_files[tap] ||= []
        bad_tap_files[tap] << path
      end
    end
  end
  return if bad_tap_files.empty?

  Finding.new(bad_tap_files.keys.map do |tap|
    append_indented_list bad_tap_files[tap], <<~EOS
      Found Ruby file outside #{tap} tap formula directory.
      (#{tap.formula_dir}):
    EOS
  end.join("\n"))
end

#check_for_unlinked_but_not_keg_only ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1159

def check_for_unlinked_but_not_keg_only
  unlinked = Formula.racks.reject do |rack|
    next true if (HOMEBREW_LINKED_KEGS/rack.basename).directory?

    begin
      Formulary.from_rack(rack).keg_only?
    rescue Homebrew::UntrustedTapError
      true
    rescue FormulaUnavailableError, TapFormulaAmbiguityError
      false
    end
  end.map(&:basename)
  return if unlinked.empty?

  Finding.new(
    <<~EOS,
    affects:     unlinked.map(&:to_s),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(unlinked, <<~EOS),
        Run `brew link` on these:
      EOS
      commands: unlinked.map { |unlink| "brew link #{unlink}" },
    ),
  )
end

#check_for_unnecessary_cask_tap ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1324

def check_for_unnecessary_cask_tap
  return if Homebrew::EnvConfig.developer?
  return if Homebrew::EnvConfig.no_install_from_api?
  return if Homebrew::EnvConfig.devcmdrun?

  cask_tap = CoreCaskTap.instance
  return unless cask_tap.installed?

  commands = ["brew untap #{cask_tap.name}"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Please remove it by running:
      EOS
      commands:,
    ),
  )
end

#check_for_unnecessary_core_tap ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1302

def check_for_unnecessary_core_tap
  return if Homebrew::EnvConfig.developer?
  return if Homebrew::EnvConfig.no_install_from_api?
  return if Homebrew::EnvConfig.devcmdrun?
  return unless CoreTap.instance.installed?

  commands = ["brew untap #{CoreTap.instance.name}"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Please remove it by running:
      EOS
      commands:,
    ),
  )
end

#check_for_unreadable_installed_formula ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1138

def check_for_unreadable_installed_formula
  formula_unavailable_exceptions = []
  Formula.racks.each do |rack|
    Formulary.from_rack(rack)
  rescue FormulaUnreadableError, FormulaClassUnavailableError,
         TapFormulaUnreadableError, TapFormulaClassUnavailableError => e
    formula_unavailable_exceptions << e
  rescue Homebrew::UntrustedTapError, FormulaUnavailableError, TapFormulaAmbiguityError
    nil
  end
  return if formula_unavailable_exceptions.empty?

  Finding.new(
    append_indented_list(formula_unavailable_exceptions.map { |s| "#{s}\n" }, <<~EOS),
      Some installed formulae are not readable:
    EOS
    affects: formula_unavailable_exceptions,
  )
end

#check_git_newline_settings ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 675

def check_git_newline_settings
  return unless Utils::Git.available?

  autocrlf = HOMEBREW_REPOSITORY.cd do
    Utils.popen_read_text(Utils::Git.git, "config", "--get", "core.autocrlf", err: :err).chomp
  end
  return if autocrlf != "true"

  commands = ["git config --global core.autocrlf input"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        If you are not routinely dealing with Windows-based projects,
        consider removing these by running:
      EOS
      commands:,
    ),
  )
end

#check_git_status ⇒ Array<Finding>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1053

def check_git_status
  return [] unless Utils::Git.available?

  repos = {
    "Homebrew/brew"          => HOMEBREW_REPOSITORY,
    "Homebrew/homebrew-core" => CoreTap.instance.path,
    "Homebrew/homebrew-cask" => CoreCaskTap.instance.path,
  }

  status = []
  repos.each do |name, path|
    finding = __tap_git_status(name, path)
    status << finding if finding.present?
  end

  status
end

#check_git_version ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 632

def check_git_version
  minimum_version = ENV.fetch("HOMEBREW_MINIMUM_GIT_VERSION")
  return unless Utils::Git.available?
  return if Utils::Git.version >= Version.new(minimum_version)

  git = Formula["git"]
  git_upgrade_cmd = git.any_version_installed? ? "upgrade" : "install"
  commands = ["brew #{git_upgrade_cmd} git"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Please upgrade:
      EOS
      commands:,
    ),
  )
end

#check_homebrew_prefix ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1244

def check_homebrew_prefix
  return if Homebrew.default_prefix?
  return if ENV["HOMEBREW_INTEGRATION_TEST"]
  return if BottleSpecification.compatible_locations?

  Finding.new(
    <<~EOS,
      Your Homebrew's prefix is not #{Homebrew::DEFAULT_PREFIX}.

      Some of Homebrew's bottles (binary packages) cannot be used with this prefix.
    EOS
    tier:        3,
    remediation: "Consider uninstalling Homebrew and reinstalling into the default prefix.",
  )
end

#check_homebrew_repository_git_hooks ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 702

def check_homebrew_repository_git_hooks
  found = T.let([], T::Array[Pathname])

  hooks_dir = HOMEBREW_REPOSITORY/".git/hooks"
  if hooks_dir.directory?
    found += hooks_dir.children.reject { |path| path.basename.to_s.end_with?(".sample") }.sort_by(&:to_s)
  end

  gitconfig = HOMEBREW_REPOSITORY/".gitconfig"
  found << gitconfig if gitconfig.exist?
  return if found.empty?

  commands = ["rm -rf \"#{HOMEBREW_REPOSITORY}/.git/hooks\" \"#{HOMEBREW_REPOSITORY}/.gitconfig\""]
  Finding.new(
    append_indented_list(found, <<~EOS),
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        Remove them with:
      EOS
      commands:,
    ),
  )
end

#check_missing_deps ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 995

def check_missing_deps
  return if !HOMEBREW_CELLAR.exist? && !Cask::Caskroom.path.exist?

  missing = Set.new
  Homebrew::Missing.deps(Formula.installed, Cask::Caskroom.casks).each_value do |deps|
    missing.merge(deps)
  end
  return if missing.empty?

  commands = ["brew install #{missing.sort * " "}"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You should `brew install` the missing dependencies:
      EOS
      commands:,
    ),
  )
end

#check_multiple_cellars ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 503

def check_multiple_cellars
  return if HOMEBREW_PREFIX.to_s == HOMEBREW_REPOSITORY.to_s
  return unless (HOMEBREW_REPOSITORY/"Cellar").exist?
  return unless (HOMEBREW_PREFIX/"Cellar").exist?

  commands = ["rm -rf #{HOMEBREW_REPOSITORY}/Cellar"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        You should delete #{HOMEBREW_REPOSITORY}/Cellar:
      EOS
      commands:,
    ),
  )
end

#check_tap_git_branch ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 772

def check_tap_git_branch
  return if ENV["CI"]
  return unless Utils::Git.available?

  deprecated_master = []
  commands = []

  brew_repo = GitRepository.new(HOMEBREW_REPOSITORY)
  deprecated_master << "Homebrew/brew" if brew_repo.branch_name == "master"

  Tap.installed.each do |tap|
    if tap.git_repository.branch_name == "master" && tap.official?
      deprecated_master << tap.name
    elsif !tap.git_repository.default_origin_branch?
      commands << "git -C $(brew --repo #{tap.name}) checkout #{tap.git_repository.origin_branch_name}"
    end
  end

  message = +""

  if deprecated_master.any?
    message += append_indented_list deprecated_master, <<~EOS
      The following repositories are on the deprecated "master" branch.
      The "master" branch sync will stop and this warning will become an error
      when Homebrew 5.2.0 is released (no earlier than 2026-06-10).
      Run `brew update` to migrate to "main":

    EOS
  end

  remediation = nil
  if commands.any?
    message << "\n" if deprecated_master.any?
    message << <<~EOS
      Some taps are not on the default git origin branch and may not receive updates.
    EOS
    remediation = Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        If this is a surprise to you, check out the default branch with:
      EOS
      commands:,
    )
  end

  Finding.new(message, remediation:) if message.present?
end

#check_tmpdir ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 983

def check_tmpdir
  tmpdir = ENV.fetch("TMPDIR", nil)
  return if tmpdir.nil? || File.directory?(tmpdir)

  Finding.new(
    <<~EOS,
      TMPDIR #{tmpdir.inspect} doesn't exist.
    EOS
  )
end

#check_tmpdir_sticky_bit ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 439

def check_tmpdir_sticky_bit
  world_writable = HOMEBREW_TEMP.stat.mode & 0777 == 0777
  return if !world_writable || HOMEBREW_TEMP.sticky?

  commands = ["sudo chmod +t #{HOMEBREW_TEMP}"]
  Finding.new(
    <<~EOS,
    remediation: Finding::Remediation.new(
      text:     append_indented_list(commands, <<~EOS),
        To set it, run the following command:
      EOS
      commands:,
    ),
  )
end

#check_untrusted_taps ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 843

def check_untrusted_taps
  return if Homebrew::EnvConfig.no_require_tap_trust?

  untrusted_taps = Homebrew::Trust.wholly_untrusted_taps
  return if untrusted_taps.empty?

  untrusted_tap_names = untrusted_taps.map(&:name)
  untrusted_tap_name_set = untrusted_tap_names.to_set
  installed_formulae_by_tap = {}
  installed_casks_by_tap = {}
  Formula.racks.each do |rack|
    next unless (keg = Keg.from_rack(rack))
    next unless (tap = keg.tab.tap)
    next unless untrusted_tap_name_set.include?(tap.name)

    installed_formulae = installed_formulae_by_tap[tap.name] ||= []
    installed_formulae << "#{tap.name}/#{rack.basename}"
  rescue
    nil
  end
  installed_formula_message = installed_formulae_by_tap.sort_by(&:first).filter_map do |_tap_name, formulae|
    next if formulae.empty?

    "brew trust --formula #{formulae.sort.join(" ")}"
  end
  Cask::Caskroom.casks.each do |cask|
    next unless (tap = cask.tab.tap)
    next unless untrusted_tap_name_set.include?(tap.name)

    installed_casks = installed_casks_by_tap[tap.name] ||= []
    installed_casks << "#{tap.name}/#{cask.token}"
  end
  installed_cask_message = installed_casks_by_tap.sort_by(&:first).filter_map do |_tap_name, casks|
    next if casks.empty?

    "brew trust --cask #{casks.sort.join(" ")}"
  end
  installed_items_from_untrusted_taps = installed_formula_message.present? || installed_cask_message.present?
  untap_command = ["brew untap #{untrusted_tap_names.join(" ")}"]
  untap_message = append_indented_list(untap_command, <<~EOS)
    Untap them with:
  EOS
  generic_trust_types = []
  generic_trust_commands = []
  if installed_formula_message.blank?
    generic_trust_types << "formulae"
    generic_trust_commands << "brew trust --formula <user>/<tap>/<formula>"
  end
  if installed_cask_message.blank?
    generic_trust_types << "casks"
    generic_trust_commands << "brew trust --cask <user>/<tap>/<cask>"
  end
  generic_trust_types << "commands"
  generic_trust_commands << "brew trust --command <user>/<tap>/<command>"
  generic_trust_prefix = if installed_items_from_untrusted_taps
    "Trust other specific"
  else
    "Trust specific"
  end
  generic_trust_message = append_indented_list generic_trust_commands, <<~EOS
    #{generic_trust_prefix} #{Utils::Text.to_sentence(generic_trust_types)} with:
  EOS
  trust_messages = if installed_items_from_untrusted_taps
    ["Prefer trusting only the specific formulae, casks or commands you need.\n"]
  else
    [untap_message]
  end
  if installed_formula_message.present?
    trust_messages << append_indented_list(installed_formula_message, <<~EOS)
      Trust installed formulae from these taps with:
    EOS
  end
  if installed_cask_message.present?
    trust_messages << append_indented_list(installed_cask_message, <<~EOS)
      Trust installed casks from these taps with:
    EOS
  end
  trust_messages << generic_trust_message
  trust_messages << <<~EOS
    Whole-tap trust is broader and includes all current and future formulae,
    casks and commands from the listed taps. Trust whole taps with:
      brew trust #{untrusted_tap_names.join(" ")}
  EOS
  trust_messages << untap_message if installed_items_from_untrusted_taps
  trust_messages << <<~EOS
    For more information, see:
      #{Formatter.url("https://docs.brew.sh/Tap-Trust")}
  EOS
  untrusted_message = append_indented_list untrusted_tap_names, <<~EOS
    The following taps are not trusted:
  EOS
  untrusted_message += "\nHomebrew is currently ignoring formulae, casks and commands" \
                       "\nfrom these taps because tap trust is required."

  Finding.new(
    untrusted_message,
    links:       ["https://docs.brew.sh/Tap-Trust"],
    remediation: trust_messages.join,
  )
end

#check_user_path_1 ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 539

def check_user_path_1
  @seen_prefix_bin = false
  @seen_prefix_sbin = false

  message = ""

  paths.each do |p|
    case p
    when "/usr/bin"
      unless @seen_prefix_bin
        # only show the doctor message if there are any conflicts
        # rationale: a default install should not trigger any brew doctor messages
        conflicts = Dir["#{HOMEBREW_PREFIX}/bin/*"]
                    .map { |fn| File.basename fn }
                    .select { |bn| File.exist? "/usr/bin/#{bn}" }

        unless conflicts.empty?
          message = append_indented_list conflicts, <<~EOS
            /usr/bin occurs before #{HOMEBREW_PREFIX}/bin in your PATH.
            This means that system-provided programs will be used instead of those
            provided by Homebrew.

            The following tools exist at both paths:
          EOS
        end
      end
    when "#{HOMEBREW_PREFIX}/bin"
      @seen_prefix_bin = true
    when "#{HOMEBREW_PREFIX}/sbin"
      @seen_prefix_sbin = true
    end
  end

  @user_path_1_done = true
  Finding.new(message, remediation: path_remediation) if message.present?
end

#check_user_path_2 ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 577

def check_user_path_2
  check_user_path_1 unless @user_path_1_done
  return if @seen_prefix_bin

  Finding.new(
    <<~EOS,
      Homebrew's "bin" was not found in your PATH.
    EOS
    remediation: path_remediation,
  )
end

#check_user_path_3 ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 590

def check_user_path_3
  check_user_path_1 unless @user_path_1_done
  return if @seen_prefix_sbin

  # Don't complain about sbin not being in the path if it doesn't exist
  sbin = HOMEBREW_PREFIX/"sbin"
  return unless sbin.directory?
  return if sbin.children.empty?
  return if sbin.children.one? && sbin.children.first.basename.to_s == ".keepme"

  Finding.new(
    <<~EOS,
      Homebrew's "sbin" was not found in your PATH but you have installed
      formulae that put executables in #{HOMEBREW_PREFIX}/sbin.
    EOS
    remediation: path_remediation(sbin.to_s),
  )
end

#current_user ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1633

def current_user
  ENV.fetch("USER", "$(whoami)")
end

#examine_git_origin(repository_path, desired_origin) ⇒ Finding?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 178

def examine_git_origin(repository_path, desired_origin)
  return if !Utils::Git.available? || !repository_path.git_repository?

  current_origin = repository_path.origin_url

  if current_origin.nil?
    Finding.new(
      <<~EOS,
      remediation: Finding::Remediation.new(
        text:     <<~EOS,
          You can solve this by adding the remote:
            git -C "#{repository_path}" remote add origin #{Formatter.url(desired_origin)}
        EOS
        commands: [
          "git -C \"#{repository_path}\" remote add origin #{desired_origin}",
        ],
      ),
    )
  elsif !current_origin.match?(%r{#{desired_origin}(\.git|/)?$}i)
    Finding.new(
      <<~EOS,
      remediation: Finding::Remediation.new(
        text:     <<~EOS,
          You can solve this by setting the origin remote:
            git -C "#{repository_path}" remote set-url origin #{Formatter.url(desired_origin)}
        EOS
        commands: [
          "git -C \"#{repository_path}\" remote set-url origin #{desired_origin}",
        ],
      ),
    )
  end
end

#fatal_build_from_source_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 141

def fatal_build_from_source_checks
  %w[
    check_for_installed_developer_tools
  ].freeze
end

#fatal_preinstall_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 134

def fatal_preinstall_checks
  %w[
    check_access_directories
  ].freeze
end

#fatal_setup_build_environment_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 148

def fatal_setup_build_environment_checks
  [].freeze
end

#find_relative_paths(*relative_paths) ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.

Finds files in HOMEBREW_PREFIX and /usr/local. Specify paths relative to a prefix, e.g. "include/foo.h". Sets @found for your convenience.

Parameters:



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# File 'diagnostic.rb', line 79

def find_relative_paths(*relative_paths)
  @found = [HOMEBREW_PREFIX, "/usr/local"].uniq.reduce([]) do |found, prefix|
    found + relative_paths.map { |f| File.join(prefix, f) }.select { |f| File.exist? f }
  end
end

#macos_bottle_remediation(version, intel:) ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 112

def macos_bottle_remediation(version, intel:)
  return if !intel && !version.outdated_release?
  return if version > :tahoe

  remediation = +"Homebrew no longer builds bottles for this configuration.\n"
  # At the time of writing, MacPorts does not provide a full set of binary packages
  # for Intel Tahoe:
  # https://build.macports.org/builders/ports-26_x86_64-builder
  remediation << if intel && version >= :tahoe
    <<~EOS
      Existing bottles may still work, but updated formulae may build from source.
    EOS
  else
    <<~EOS
      Consider MacPorts, which provides binary packages for this macOS version:
        #{Formatter.url("https://www.macports.org")}
    EOS
  end
end

#non_core_taps ⇒ Array<Tap>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 1547

def non_core_taps
  @non_core_taps ||= Tap.installed.reject(&:core_tap?).reject(&:core_cask_tap?)
end

#none_string ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 102

def none_string
  "<NONE>"
end

#preinstall_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 166

def preinstall_checks
  %w[
    check_untrusted_taps
  ].freeze
end

#supported_configuration_checks ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



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# File 'diagnostic.rb', line 153

def supported_configuration_checks
  %w[
    check_homebrew_prefix
    check_for_nix_homebrew
  ].freeze
end

#user_tilde(path) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'diagnostic.rb', line 92

def user_tilde(path)
  home = Dir.home
  if path == home
    "~"
  else
    path.gsub(%r{^#{home}/}, "~/")
  end
end