diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..4415899
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,20 @@
+default:
+  before_script:
+    - apt-get -qq update
+    - apt-get install -y gnupg2 gettext git subversion util-linux
+    - gem update --system --quiet
+    - gem update bundler
+    - bundle install
+    - gem install minitest-fail-fast
+    - gem install minitest-junit simplecov-cobertura
+
+variables:
+  TESTOPT: '--junit --fail-fast --pride'
+
+test:2.4:
+  image: ruby:2.4
+  script:
+    - echo $PATH
+    - whereis git
+    - bundle exec rake test
+
diff --git a/lib/releaseme/requirement_checker.rb b/lib/releaseme/requirement_checker.rb
index 6058f4a..b3957fb 100644
--- a/lib/releaseme/requirement_checker.rb
+++ b/lib/releaseme/requirement_checker.rb
@@ -1,163 +1,170 @@
 #--
 # Copyright (C) 2015-2017 Harald Sitter <sitter@kde.org>
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundation; either version 2 of
 # the License or (at your option) version 3 or any later version
 # accepted by the membership of KDE e.V. (or its successor approved
 # by the membership of KDE e.V.), which shall act as a proxy
 # defined in Section 14 of version 3 of the license.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #++
 
 # NB: cannot use other files as everything else is meant to load this first.
 require_relative 'silencer'
 
 module ReleaseMe
   # Makes sure the runtime requirements of releasme are met.
   class RequirementChecker
     # Finds executables. MakeMakefile is the only core ruby entity providing
     # PATH based executable lookup, unfortunately it is really not meant to be
     # used outside extconf.rb use cases as it mangles the main name scope by
     # injecting itself into it (which breaks for example the ffi gem).
     # The Shell interface's command-processor also has lookup code but it's not
     # Windows compatible.
     class Executable
       attr_reader :bin
 
       def initialize(bin)
         @bin = bin
       end
 
       # Finds the executable in PATH by joining it with all parts of PATH and
       # checking if the resulting absolute path exists and is an executable.
       # This also honor's Windows' PATHEXT to determine the list of potential
       # file extensions. So find('gpg2') will find gpg2 on POSIX and gpg2.exe
       # on Windows.
       def find
         # PATHEXT on Windows defines the valid executable extensions.
+        p ENV
         exts = ENV.fetch('PATHEXT', '').split(';')
         # On other systems we'll work with no extensions.
         exts << '' if exts.empty?
 
+        p ENV['PATH']
+
         ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
+          p ['split path', path]
           path = unescape_path(path)
+          p ['unex', path]
           exts.each do |ext|
+            p ['ext', ext]
             file = File.join(path, bin + ext)
+            p ['file', file, executable?(file)]
             return file if executable?(file)
           end
         end
 
         nil
       end
 
       private
 
       class << self
         def windows?
           @windows ||= ENV['RELEASEME_FORCE_WINDOWS'] || mswin? || mingw?
         end
 
         private
 
         def mswin?
           @mswin ||= /mswin/ =~ RUBY_PLATFORM
         end
 
         def mingw?
           @mingw ||= /mingw/ =~ RUBY_PLATFORM
         end
       end
 
       def windows?
         self.class.windows?
       end
 
       def executable?(path)
         stat = File.stat(path)
       rescue SystemCallError
       else
         return true if stat.file? && stat.executable?
       end
 
       def unescape_path(path)
         # Strip qutation.
         # NB: POSIX does not define any quoting mechanism so you simply cannot
         # have colons in PATH on POSIX systems as a side effect we mustn't
         # strip quotes as they have no syntactic meaning and instead are
         # assumed to be part of the path
         # http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03
         return path.sub(/\A"(.*)"\z/m, '\1') if windows?
         path
       end
     end
 
     # NOTE: The versions are restricted upwards because behavior changes in the
     # language can result in unexpected outcome when using releaseme. i.e.
     # you may end up with a broken or malformed tar. To prevent this, a change
     # here must be followed by running `rake test` to pass the entire test suite
     # Also see the section on bumping versions in the REAMDE.
     COMPATIBLE_RUBIES = %w[2.3.0 2.4.0 2.5.0 2.6.0 2.7.0].freeze
     REQUIRED_BINARIES = %w[svn git tar xz msgfmt gpg2].freeze
 
     def initialize
       @ruby_version = RUBY_VERSION
     end
 
     def check
       raise 'Not all requirements met.' unless check_ruby && check_binaries
     end
 
     private
 
     def check_ruby
       return true if ruby_compatible?
       print "- Ruby #{COMPATIBLE_RUBIES.join(' or ')} required."
       print "  Currently using: #{@ruby_version}"
       false
     end
 
     def check_binaries
       missing_binaries.each do |m|
         print "- Missing binary: #{m}."
       end.empty?
     end
 
     def print(*args)
       return if Silencer.shutup?
       puts(*args)
     end
 
     def ruby_compatible?
       COMPATIBLE_RUBIES.each do |v|
         return true if compatible?(v)
       end
       false
     end
 
     def missing_binaries
       missing_binaries = []
       REQUIRED_BINARIES.each do |r|
         missing_binaries << missing?(r)
       end
       missing_binaries.compact
     end
 
     def compatible?(a)
       Gem::Dependency.new('', "~> #{a}").match?('', @ruby_version)
     end
 
     def missing?(bin)
       return bin unless Executable.new(bin).find
       nil
     end
   end
 end
diff --git a/releaseme.gemspec b/releaseme.gemspec
index e24c95a..2168874 100644
--- a/releaseme.gemspec
+++ b/releaseme.gemspec
@@ -1,58 +1,57 @@
 # coding: utf-8
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |spec|
   spec.name        = 'releaseme'
   spec.version     = '0.0'
   spec.authors     = ['Harald Sitter']
   spec.email       = ['sitter@kde.org']
 
   spec.summary     = 'KDE tarball release tool'
   spec.description = 'Helps with releasing KDE software as source code tarballs'
   spec.homepage    = 'https://phabricator.kde.org/source/releaseme/'
 
   # Prevent pushing this gem to RubyGems.org. To allow pushes either set the
   # 'allowed_push_host' to allow pushing to a single host or delete this section
   # to allow pushing to any host.
   if spec.respond_to?(:metadata)
     spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
   else
     raise 'RubyGems 2.0 or newer is required to protect against ' \
       'public gem pushes.'
   end
 
   spec.files = `git ls-files -z`.split("\x0")
   rejected_files = spec.files.find_all do |f|
     f.match(%r{^(test|spec|features)/}) ||
     (f.match(%r{^lib/[^/]+.rb}) && !f.match(%r{^lib/releaseme.rb}))
   end
   spec.files -= rejected_files
 
   # When run through bundler AND in a Gem search path mangle the working
   # directory.
   if File.basename($PROGRAM_NAME).include?('bundle') &&
      (Gem.path.any? { |x| Dir.pwd.start_with?(x) } ||
       Dir.pwd.include?('.bundler/') || Dir.pwd.include?('.bundle/'))
     warn "Mangling releaseme gem as it is in a gem search path #{Dir.pwd}"
     FileUtils.rm_rf(rejected_files, verbose: true)
   end
 
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'bundler'
   # Development
   spec.add_development_dependency 'rake', '~> 10.0'
   # Documentation
   spec.add_development_dependency 'rdoc'
   spec.add_development_dependency 'yard'
   # Testing
   spec.add_development_dependency 'minitest'
   spec.add_development_dependency 'mocha'
   spec.add_development_dependency 'webmock'
   # Coverage
-  spec.add_development_dependency 'coveralls_reborn'
   spec.add_development_dependency 'simplecov', '>= 0.11'
   # Quality
   spec.add_development_dependency 'rubocop'
 end