brew/Library/Homebrew/cmd/leaves.rb
2018-11-11 19:13:28 +05:30

41 lines
828 B
Ruby

#: * `leaves`:
#: Show installed formulae that are not dependencies of another installed formula.
require "formula"
require "tab"
require "cli_parser"
module Homebrew
module_function
def leaves_args
Homebrew::CLI::Parser.new do
usage_banner <<~EOS
`leaves`
Show installed formulae that are not dependencies of another installed formula.
EOS
switch :debug
end
end
def leaves
leaves_args.parse
installed = Formula.installed.sort
deps_of_installed = installed.flat_map do |f|
f.runtime_dependencies.map do |dep|
begin
dep.to_formula.full_name
rescue FormulaUnavailableError
dep.name
end
end
end
leaves = installed.map(&:full_name) - deps_of_installed
leaves.each(&method(:puts))
end
end