package.rake in kpm-0.6.1

- old
+ new

@@ -1,7 +1,8 @@
 # For Bundler.with_clean_env
 require 'bundler/setup'
+require 'yaml'
 
 PACKAGE_NAME = 'kpm'
 
 require './lib/kpm/version'
 VERSION = KPM::VERSION
@@ -34,19 +35,23 @@
   task :osx => [:bundle_install, "packaging/traveling-ruby-#{TRAVELING_RUBY_VERSION}-osx.tar.gz"] do
     create_package('osx')
   end
 
   desc 'Install gems to local directory'
-  task :bundle_install do
+  task :bundle_install => [:clean] do
+    # abort if version packaging does not exist on repository
+    abort "KPM #{VERSION} does not exists in the repository." unless gem_exists?
+
     # Note! Must match TRAVELING_RUBY_VERSION above
     expected_ruby_version = TRAVELING_RUBY_VERSION.split('-')[-1]
     if RUBY_VERSION !~ /#{Regexp.quote(expected_ruby_version)}/
       abort "You can only 'bundle install' using Ruby #{expected_ruby_version}, because that's what Traveling Ruby uses."
     end
     sh 'rm -rf packaging/tmp'
     sh 'mkdir -p packaging/tmp'
     sh 'cp packaging/Gemfile packaging/tmp/'
+    sh "sed -i 's/VERSION/#{VERSION}/g' packaging/tmp/Gemfile"
 
     sh "rm -rf packaging/vendor/ruby/#{expected_ruby_version}/bundler" # if multiple clones of same repo, may load in wrong one
 
     Bundler.with_clean_env do
       sh 'cd packaging/tmp && env BUNDLE_IGNORE_CONFIG=1 bundle install --path ../vendor --without development'
@@ -110,5 +115,13 @@
 
 def download_runtime(target)
   sh 'mkdir -p packaging && cd packaging && curl -L -O --fail ' +
          "https://d6r77u77i8pq3.cloudfront.net/releases/traveling-ruby-#{TRAVELING_RUBY_VERSION}-#{target}.tar.gz"
 end
+
+def gem_exists?
+  response = `gem specification 'kpm' -r -v #{VERSION} 2>&1`
+  return false if response.nil?
+
+  specification = YAML::load(response)
+  specification.instance_of?(Gem::Specification)
+end
\ No newline at end of file