Модуль: InstalledDependents Закрытый

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# File 'installed_dependents.rb', line 26

def find_some_installed_dependents(kegs, casks: [])
  keg_names = kegs.select(&:optlinked?).map(&:name)
  keg_formulae = []
  kegs_by_source = kegs.group_by do |keg|
    # First, attempt to resolve the keg to a formula
    # to get up-to-date name and tap information.
    f = keg.to_formula
    keg_formulae << f
    [f.name, f.tap]
  rescue
    # If the formula for the keg can't be found,
    # fall back to the information in the tab.
    [keg.name, keg.tab.tap]
  end

  all_required_kegs = Set.new
  all_dependents = []

  # Don't include dependencies of kegs that were in the given array.
  dependents_to_check = (Formula.installed - keg_formulae) + (Cask::Caskroom.casks - casks)

  dependents_to_check.each do |dependent|
    required = case dependent
    when Formula
      dependent.missing_dependencies(hide: keg_names).filter_map do |d|
        d.to_installed_formula
      rescue FormulaUnavailableError
        nil
      end
    when Cask::Cask
      # When checking for cask dependents, we don't care about missing or non-runtime dependencies
      CaskDependent.new(dependent).runtime_dependencies.map(&:to_installed_formula)
    end

    required_kegs = required.filter_map do |f|
      f_kegs = kegs_by_source[[f.name, f.tap]]
      next unless f_kegs

      f_kegs.max_by(&:scheme_and_version)
    end

    next if required_kegs.empty?

    all_required_kegs += required_kegs
    all_dependents << dependent.to_s
  end

  return if all_required_kegs.empty?
  return if all_dependents.empty?

  [all_required_kegs.to_a, all_dependents.sort]
end