Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/poise-languages/files/halite_gem/poise_languages/utils/which.rb

@@ -0,0 +1,51 @@
+#
+# Copyright 2015-2017, Noah Kantrowitz
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+
+module PoiseLanguages
+  module Utils
+    # Replacement module for Chef::Mixin::Which with a slight improvement.
+    #
+    # @since 1.0.0
+    # @see Which#which
+    module Which
+      extend self
+
+      # A replacement for Chef::Mixin::Which#which that allows using something
+      # other than an environment variable if needed.
+      #
+      # @param cmd [String] Executable to search for.
+      # @param extra_path [Array<String>] Extra directories to always search.
+      # @param path [String, nil] Replacement $PATH value.
+      # @return [String, false]
+      def which(cmd, extra_path: %w{/bin /usr/bin /sbin /usr/sbin}, path: nil)
+        # If it was already absolute, just return that.
+        return cmd if cmd =~ /^(\/|([a-z]:)?\\)/i
+        # Allow passing something other than the real env var.
+        path ||= ENV['PATH']
+        # Based on Chef::Mixin::Which#which
+        # Copyright 2010-2017, Chef Softare, Inc.
+        paths = path.split(File::PATH_SEPARATOR) + extra_path
+        paths.each do |candidate_path|
+          filename = ::File.join(candidate_path, cmd)
+          return filename if ::File.executable?(filename)
+        end
+        false
+      end
+
+    end
+  end
+end