cfc8fca74d
* Add tests that run only if 'jruby' is installed. * Note that if your formula has :jruby deps, it should likely "depend_on 'jruby'" as well.
126 lines
3.2 KiB
Ruby
126 lines
3.2 KiB
Ruby
require 'formula'
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require 'set'
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class FormulaInstaller
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@@attempted = Set.new
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def initialize
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@install_deps = true
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end
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attr_writer :install_deps
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def expand_deps f
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deps = []
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f.deps.collect do |dep|
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dep = Formula.factory dep
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deps += expand_deps dep
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deps << dep
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end
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deps
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end
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def pyerr dep
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brew_pip = ' brew install pip &&' unless Formula.factory('pip').installed?
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<<-EOS
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Unsatisfied dependency, #{dep}
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Homebrew does not provide formula for Python dependencies, pip does:
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#{brew_pip} pip install #{dep}
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EOS
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end
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def plerr dep; <<-EOS
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Unsatisfied dependency, #{dep}
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Homebrew does not provide formula for Perl dependencies, cpan does:
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cpan -i #{dep}
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EOS
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end
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def rberr dep; <<-EOS
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Unsatisfied dependency "#{dep}"
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Homebrew does not provide formulae for Ruby dependencies, rubygems does:
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gem install #{dep}
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EOS
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end
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def jrberr dep; <<-EOS
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Unsatisfied dependency "#{dep}"
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Homebrew does not provide formulae for JRuby dependencies, rubygems does:
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jruby -S gem install #{dep}
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EOS
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end
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def check_external_deps f
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return unless f.external_deps
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f.external_deps[:python].each do |dep|
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raise pyerr(dep) unless quiet_system "/usr/bin/env", "python", "-c", "import #{dep}"
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end
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f.external_deps[:perl].each do |dep|
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raise plerr(dep) unless quiet_system "/usr/bin/env", "perl", "-e", "use #{dep}"
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end
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f.external_deps[:ruby].each do |dep|
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raise rberr(dep) unless quiet_system "/usr/bin/env", "ruby", "-rubygems", "-e", "require '#{dep}'"
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end
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f.external_deps[:jruby].each do |dep|
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raise rberr(dep) unless quiet_system "/usr/bin/env", "jruby", "-rubygems", "-e", "require '#{dep}'"
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end
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end
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def check_formula_deps f
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expand_deps(f).each do |dep|
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begin
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install_private dep unless dep.installed?
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rescue
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#TODO continue if this is an optional dep
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raise
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end
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end
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end
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def install f
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if @install_deps
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check_external_deps f
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check_formula_deps f
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end
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install_private f
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end
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private
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def install_private f
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return if @@attempted.include? f.name
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@@attempted << f.name
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# 1. formulae can modify ENV, so we must ensure that each
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# installation has a pristine ENV when it starts, forking now is
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# the easiest way to do this
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# 2. formulae have access to __END__ the only way to allow this is
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# to make the formula script the executed script
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read, write = IO.pipe
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# I'm guessing this is not a good way to do this, but I'm no UNIX guru
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ENV['HOMEBREW_ERROR_PIPE'] = write.to_i.to_s
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begin #watch_out_for_spill do #disabled temporarily, see Issue #124
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fork do
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begin
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read.close
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exec '/usr/bin/nice', '/usr/bin/ruby', '-I', File.dirname(__FILE__), '-rinstall', f.path, '--', *ARGV.options
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rescue => e
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Marshal.dump(e, write)
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write.close
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exit! 1
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end
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end
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ignore_interrupts do # because child proc will get it and marshall it back
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write.close
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Process.wait
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data = read.read
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raise Marshal.load(data) unless data.nil? or data.empty?
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raise "Suspicious installation failure" unless $?.success?
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end
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end
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end
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end
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