patch daru as part of the packaging to hide unnecessary warning messages

As SciRuby simply refuse to merge an PR from 2017 - which would have fixed this

(SciRuby/statsample#69)

Rakefile

@@ -222,6 +222,17 @@ namespace :package do
         cd 'gems' do
           mkdir APP_NAME
           %w[aux lib].each { |d| cp_r "#{Rake.original_dir}/#{d}", APP_NAME }
+
+          # patch daru lib to hide unneccessary messages
+          cd 'daru-0.1.6/lib' do
+            orig = "'spreadsheet' => '~>1.1.1', 'mechanize' => '~>2.7.5'"
+            sh "sed \"s/#{orig}//\" daru.rb > daru.rb-1"
+            sh "rm daru.rb"
+
+            orig = "require 'backports'"
+            sh "sed \"s/#{orig}/# #{orig}/\" daru.rb-1 > daru.rb"
+            sh "rm daru.rb-1"
+          end
         end
 
         cd 'specifications' do

genevalidator.gemspec

@@ -29,12 +29,6 @@ Gem::Specification.new do |s|
   s.add_dependency 'slim', '~>3.0'
   s.add_dependency 'statsample', '2.1.0'
 
-  # Adding mechanize gem just to silence a message on load.
-  # This is due the Statsample gem
-  # See https://github.com/SciRuby/daru/issues/404
-  # See https://github.com/SciRuby/statsample/pull/69
-  s.add_dependency 'mechanize', '2.7.5'
-
   s.files         = `git ls-files -z`.split("\x0")
   s.executables   = s.files.grep(%r{^bin/}) { |f| File.basename(f) }
   s.test_files    = s.files.grep(%r{^(test|spec|features)/})