uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/ruby-modules/with-packages/test.rb

@@ -0,0 +1,76 @@
+#!/usr/bin/env ruby
+
+# this is a quick and dirty test suite for easier analyzing of breakages in a
+# manual testing.
+# For automated testing use the test.nix
+
+require 'fileutils'
+
+class FakeGemfile
+  attr_reader :gems
+
+  def initialize
+    @gems = []
+  end
+
+  def source(_source, &block)
+    instance_exec(&block)
+  end
+
+  def gem(name)
+    @gems << name
+  end
+end
+
+gemfile = File.expand_path(File.join(__dir__, 'Gemfile'))
+packages = FakeGemfile.new.instance_eval(File.read(gemfile), gemfile)
+
+test_cases = packages.map { |pkg| [pkg, "require '#{pkg}'"] }.to_h
+
+test_cases.merge!(
+  'digest-sha3' => "require 'digest/sha3'",
+  'gitlab-markup' => "require 'github/markup'",
+  'idn-ruby' => "require 'idn'",
+  'net-scp' => "require 'net/scp'",
+  'taglib-ruby' => "require 'taglib'",
+  'net-ssh' => "require 'net/ssh'",
+  'ruby-libvirt' => "require 'libvirt'",
+  'ruby-lxc' => "require 'lxc'",
+  'rubyzip' => "require 'zip'",
+  'sinatra' => "require 'sinatra/base'",
+  'libxml-ruby' => "require 'libxml'",
+  'ruby-terminfo' => "require 'terminfo'",
+  'ovirt-engine-sdk' => "require 'ovirtsdk4'",
+  'fog-dnsimple' => "require 'fog/dnsimple'"
+)
+
+test_cases['sequel_pg'] = <<~TEST
+  require 'pg'
+  require 'sequel'
+  require 'sequel/adapters/postgresql'
+  require 'sequel_pg'
+TEST
+
+tmpdir = File.expand_path(File.join(__dir__, 'tests'))
+FileUtils.rm_rf(tmpdir)
+FileUtils.mkdir_p(tmpdir)
+
+failing = test_cases.reject do |name, test_case|
+  test_case = <<~SHELL
+    #!/usr/bin/env nix-shell
+    #!nix-shell -i ruby -E "(import ../../../.. {}).ruby.withPackages (r: [ r.#{name} ] )"
+    #{test_case}
+  SHELL
+
+  file = File.join(tmpdir, "#{name}_test.rb")
+  File.write(file, test_case)
+  FileUtils.chmod('u=wrx', file)
+
+  system(file) && FileUtils.rm(file)
+end
+
+exit if failing.empty?
+
+puts "Following gems failed: #{failing.keys.join(' ')}"
+puts "tests for failing gems remain in #{tmpdir}"
+exit 1