Apply require speedups to ohailcg/require-speedups

Same kinds of fixes from chef core with require_relative and
idempotency checks.

Signed-off-by: Lamont Granquist <lamont@scriptkiddie.org>

43 files changed, 81 insertions, 81 deletions

diff --git a/lib/ohai/application.rb b/lib/ohai/application.rb
index b1455cab..a469fc56 100644
--- a/lib/ohai/application.rb
+++ b/lib/ohai/application.rb
@@ -17,9 +17,9 @@
 
 require "chef-config/path_helper"
 require "chef-config/workstation_config_loader"
-require "ohai"
-require "ohai/log"
-require "mixlib/cli"
+require_relative "../ohai"
+require_relative "log"
+require "mixlib/cli" unless defined?(Mixlib::CLI)
 require "benchmark"
 
 # The Application class is what is called by the Ohai CLI binary. It handles:
diff --git a/lib/ohai/config.rb b/lib/ohai/config.rb
index 6029a26f..66790d98 100644
--- a/lib/ohai/config.rb
+++ b/lib/ohai/config.rb
@@ -18,8 +18,8 @@
 #
 
 require "chef-config/config"
-require "ohai/exception"
-require "ohai/plugin_config"
+require_relative "exception"
+require_relative "plugin_config"
 
 module Ohai
   Config = ChefConfig::Config
diff --git a/lib/ohai/dsl.rb b/lib/ohai/dsl.rb
index 7ee6645a..a899a7f4 100644
--- a/lib/ohai/dsl.rb
+++ b/lib/ohai/dsl.rb
@@ -17,5 +17,5 @@
 # limitations under the License.
 #
 
-require "ohai/dsl/plugin"
-require "ohai/dsl/plugin/versionvii"
+require_relative "dsl/plugin"
+require_relative "dsl/plugin/versionvii"
diff --git a/lib/ohai/dsl/plugin.rb b/lib/ohai/dsl/plugin.rb
index b102edc0..0abb160d 100644
--- a/lib/ohai/dsl/plugin.rb
+++ b/lib/ohai/dsl/plugin.rb
@@ -18,11 +18,11 @@
 # limitations under the License.
 #
 
-require "ohai/mixin/os"
-require "ohai/mixin/command"
-require "ohai/mixin/seconds_to_human"
-require "ohai/hints"
-require "ohai/util/file_helper"
+require_relative "../mixin/os"
+require_relative "../mixin/command"
+require_relative "../mixin/seconds_to_human"
+require_relative "../hints"
+require_relative "../util/file_helper"
 
 module Ohai
 
diff --git a/lib/ohai/hints.rb b/lib/ohai/hints.rb
index ffa02a43..c1ec22a3 100644
--- a/lib/ohai/hints.rb
+++ b/lib/ohai/hints.rb
@@ -17,7 +17,7 @@
 # limitations under the License.
 #
 
-require "ffi_yajl"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 
 module Ohai
   # Ohai hints are json files on disk that give ohai a hint to things that are often
diff --git a/lib/ohai/loader.rb b/lib/ohai/loader.rb
index 663d1d4e..733aab57 100644
--- a/lib/ohai/loader.rb
+++ b/lib/ohai/loader.rb
@@ -17,10 +17,10 @@
 #
 
 require "chef-config/path_helper"
-require "ohai/log"
-require "ohai/mash"
-require "ohai/dsl"
-require "pathname"
+require_relative "log"
+require_relative "mash"
+require_relative "dsl"
+require "pathname" unless defined?(Pathname)
 
 module Ohai
 
diff --git a/lib/ohai/mixin/azure_metadata.rb b/lib/ohai/mixin/azure_metadata.rb
index 1087fcb8..783ef8a9 100644
--- a/lib/ohai/mixin/azure_metadata.rb
+++ b/lib/ohai/mixin/azure_metadata.rb
@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "net/http"
+require "net/http" unless defined?(Net::HTTP)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/command.rb b/lib/ohai/mixin/command.rb
index eb4844b5..f791c7f1 100644
--- a/lib/ohai/mixin/command.rb
+++ b/lib/ohai/mixin/command.rb
@@ -17,9 +17,9 @@
 # limitations under the License.
 #
 
-require "ohai/exception"
-require "ohai/log"
-require "mixlib/shellout"
+require_relative "../exception"
+require_relative "../log"
+require "mixlib/shellout" unless defined?(Mixlib::ShellOut)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/do_metadata.rb b/lib/ohai/mixin/do_metadata.rb
index b41b80b8..10d850ca 100644
--- a/lib/ohai/mixin/do_metadata.rb
+++ b/lib/ohai/mixin/do_metadata.rb
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "net/http"
+require "net/http" unless defined?(Net::HTTP)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/ec2_metadata.rb b/lib/ohai/mixin/ec2_metadata.rb
index 4c878e72..d050c473 100644
--- a/lib/ohai/mixin/ec2_metadata.rb
+++ b/lib/ohai/mixin/ec2_metadata.rb
@@ -17,7 +17,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "net/http"
+require "net/http" unless defined?(Net::HTTP)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/gce_metadata.rb b/lib/ohai/mixin/gce_metadata.rb
index 929928c7..6200cab6 100644
--- a/lib/ohai/mixin/gce_metadata.rb
+++ b/lib/ohai/mixin/gce_metadata.rb
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "net/http"
+require "net/http" unless defined?(Net::HTTP)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/http_helper.rb b/lib/ohai/mixin/http_helper.rb
index 28a99b79..007476e6 100644
--- a/lib/ohai/mixin/http_helper.rb
+++ b/lib/ohai/mixin/http_helper.rb
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "socket"
+require "socket" unless defined?(Socket)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/scaleway_metadata.rb b/lib/ohai/mixin/scaleway_metadata.rb
index eb281035..ab88559f 100644
--- a/lib/ohai/mixin/scaleway_metadata.rb
+++ b/lib/ohai/mixin/scaleway_metadata.rb
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "net/http"
+require "net/http" unless defined?(Net::HTTP)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/mixin/softlayer_metadata.rb b/lib/ohai/mixin/softlayer_metadata.rb
index cc2b25f6..d2270380 100644
--- a/lib/ohai/mixin/softlayer_metadata.rb
+++ b/lib/ohai/mixin/softlayer_metadata.rb
@@ -18,7 +18,7 @@
 # limitations under the License.
 
 require "net/https"
-require "uri"
+require "uri" unless defined?(URI)
 
 # https://softlayer.github.io/reference/services/SoftLayer_Resource_Metadata/
 module ::Ohai::Mixin::SoftlayerMetadata
diff --git a/lib/ohai/plugin_config.rb b/lib/ohai/plugin_config.rb
index b757af21..73c6e432 100644
--- a/lib/ohai/plugin_config.rb
+++ b/lib/ohai/plugin_config.rb
@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-require "ohai/exception"
+require_relative "exception"
 
 module Ohai
   class PluginConfig < Hash
diff --git a/lib/ohai/plugins/azure.rb b/lib/ohai/plugins/azure.rb
index 781a55a7..d0a12567 100644
--- a/lib/ohai/plugins/azure.rb
+++ b/lib/ohai/plugins/azure.rb
@@ -15,8 +15,8 @@
 #
 
 Ohai.plugin(:Azure) do
-  require "ohai/mixin/azure_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/azure_metadata"
+  require_relative "../mixin/http_helper"
 
   include Ohai::Mixin::AzureMetadata
   include Ohai::Mixin::HttpHelper
diff --git a/lib/ohai/plugins/bsd/virtualization.rb b/lib/ohai/plugins/bsd/virtualization.rb
index 9635070f..2e2c3a76 100644
--- a/lib/ohai/plugins/bsd/virtualization.rb
+++ b/lib/ohai/plugins/bsd/virtualization.rb
@@ -20,7 +20,7 @@
 Ohai.plugin(:Virtualization) do
   provides "virtualization"
   depends "dmi"
-  require "ohai/mixin/dmi_decode"
+  require_relative "../../mixin/dmi_decode"
   include Ohai::Mixin::DmiDecode
 
   collect_data(:freebsd, :openbsd, :netbsd, :dragonflybsd) do
diff --git a/lib/ohai/plugins/digital_ocean.rb b/lib/ohai/plugins/digital_ocean.rb
index 8e6b3028..4ee39e2f 100644
--- a/lib/ohai/plugins/digital_ocean.rb
+++ b/lib/ohai/plugins/digital_ocean.rb
@@ -16,8 +16,8 @@
 # limitations under the License.
 
 Ohai.plugin(:DigitalOcean) do
-  require "ohai/mixin/do_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/do_metadata"
+  require_relative "../mixin/http_helper"
 
   include Ohai::Mixin::DOMetadata
   include Ohai::Mixin::HttpHelper
diff --git a/lib/ohai/plugins/dmi.rb b/lib/ohai/plugins/dmi.rb
index 10fe46c3..7c3e5f4b 100644
--- a/lib/ohai/plugins/dmi.rb
+++ b/lib/ohai/plugins/dmi.rb
@@ -22,7 +22,7 @@ Ohai.plugin(:DMI) do
   # dmidecode does not return data without access to /dev/mem (or its equivalent)
 
   collect_data do
-    require "ohai/common/dmi"
+    require_relative "../common/dmi"
     dmi Mash.new
 
     # all output lines should fall within one of these patterns
diff --git a/lib/ohai/plugins/ec2.rb b/lib/ohai/plugins/ec2.rb
index 8df09c3f..bd75588e 100644
--- a/lib/ohai/plugins/ec2.rb
+++ b/lib/ohai/plugins/ec2.rb
@@ -26,8 +26,8 @@
 # 4. Kernel data mentioned Amazon. This catches Windows HVM & paravirt instances
 
 Ohai.plugin(:EC2) do
-  require "ohai/mixin/ec2_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/ec2_metadata"
+  require_relative "../mixin/http_helper"
   require "base64"
 
   include Ohai::Mixin::Ec2Metadata
diff --git a/lib/ohai/plugins/eucalyptus.rb b/lib/ohai/plugins/eucalyptus.rb
index 81049194..2b34bf6d 100644
--- a/lib/ohai/plugins/eucalyptus.rb
+++ b/lib/ohai/plugins/eucalyptus.rb
@@ -19,8 +19,8 @@
 
 Ohai.plugin(:Eucalyptus) do
   # eucalyptus metadata service is compatible with the ec2 service calls
-  require "ohai/mixin/ec2_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/ec2_metadata"
+  require_relative "../mixin/http_helper"
 
   include Ohai::Mixin::Ec2Metadata
   include Ohai::Mixin::HttpHelper
diff --git a/lib/ohai/plugins/gce.rb b/lib/ohai/plugins/gce.rb
index b38cf7fc..974adaff 100644
--- a/lib/ohai/plugins/gce.rb
+++ b/lib/ohai/plugins/gce.rb
@@ -15,8 +15,8 @@
 # limitations under the License.
 
 Ohai.plugin(:GCE) do
-  require "ohai/mixin/gce_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/gce_metadata"
+  require_relative "../mixin/http_helper"
 
   include Ohai::Mixin::GCEMetadata
   include Ohai::Mixin::HttpHelper
diff --git a/lib/ohai/plugins/hostname.rb b/lib/ohai/plugins/hostname.rb
index f333bf4a..911a7d9b 100644
--- a/lib/ohai/plugins/hostname.rb
+++ b/lib/ohai/plugins/hostname.rb
@@ -26,7 +26,7 @@
 #
 
 Ohai.plugin(:Hostname) do
-  require "socket"
+  require "socket" unless defined?(Socket)
   require "ipaddr"
 
   provides "domain", "hostname", "fqdn", "machinename"
@@ -161,7 +161,7 @@ Ohai.plugin(:Hostname) do
 
   collect_data(:windows) do
     require "wmi-lite/wmi"
-    require "socket"
+    require "socket" unless defined?(Socket)
 
     wmi = WmiLite::Wmi.new
     host = wmi.first_of("Win32_ComputerSystem")
diff --git a/lib/ohai/plugins/kernel.rb b/lib/ohai/plugins/kernel.rb
index b3964c4c..204af478 100644
--- a/lib/ohai/plugins/kernel.rb
+++ b/lib/ohai/plugins/kernel.rb
@@ -247,7 +247,7 @@ Ohai.plugin(:Kernel) do
   end
 
   collect_data(:windows) do
-    require "win32ole"
+    require "win32ole" unless defined?(WIN32OLE)
     require "wmi-lite/wmi"
 
     WIN32OLE.codepage = WIN32OLE::CP_UTF8
diff --git a/lib/ohai/plugins/linux/fips.rb b/lib/ohai/plugins/linux/fips.rb
index 70d5e142..2f90ea94 100644
--- a/lib/ohai/plugins/linux/fips.rb
+++ b/lib/ohai/plugins/linux/fips.rb
@@ -28,7 +28,7 @@ Ohai.plugin(:Fips) do
   collect_data(:linux) do
     fips Mash.new
 
-    require "openssl"
+    require "openssl" unless defined?(OpenSSL)
     if defined?(OpenSSL.fips_mode) && OpenSSL.fips_mode && !$FIPS_TEST_MODE
       fips["kernel"] = { "enabled" => true }
     else
diff --git a/lib/ohai/plugins/linux/virtualization.rb b/lib/ohai/plugins/linux/virtualization.rb
index fdc4b197..e99997eb 100644
--- a/lib/ohai/plugins/linux/virtualization.rb
+++ b/lib/ohai/plugins/linux/virtualization.rb
@@ -19,7 +19,7 @@
 Ohai.plugin(:Virtualization) do
   provides "virtualization"
   depends "dmi"
-  require "ohai/mixin/dmi_decode"
+  require_relative "../../mixin/dmi_decode"
   include Ohai::Mixin::DmiDecode
 
   def lxc_version_exists?
diff --git a/lib/ohai/plugins/network.rb b/lib/ohai/plugins/network.rb
index 88c72226..9b9811dc 100644
--- a/lib/ohai/plugins/network.rb
+++ b/lib/ohai/plugins/network.rb
@@ -18,7 +18,7 @@
 
 Ohai.plugin(:NetworkAddresses) do
   require "ipaddress"
-  require "ohai/mixin/network_constants"
+  require_relative "../mixin/network_constants"
   include Ohai::Mixin::NetworkConstants
 
   provides "ipaddress", "ip6address", "macaddress"
diff --git a/lib/ohai/plugins/openstack.rb b/lib/ohai/plugins/openstack.rb
index 22d4db57..cd2731da 100644
--- a/lib/ohai/plugins/openstack.rb
+++ b/lib/ohai/plugins/openstack.rb
@@ -17,8 +17,8 @@
 # limitations under the License.
 
 Ohai.plugin(:Openstack) do
-  require "ohai/mixin/ec2_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/ec2_metadata"
+  require_relative "../mixin/http_helper"
   include Ohai::Mixin::Ec2Metadata
   include Ohai::Mixin::HttpHelper
 
diff --git a/lib/ohai/plugins/os.rb b/lib/ohai/plugins/os.rb
index 5955f73f..d46e70af 100644
--- a/lib/ohai/plugins/os.rb
+++ b/lib/ohai/plugins/os.rb
@@ -20,7 +20,7 @@
 #
 
 Ohai.plugin(:OS) do
-  require "ohai/mixin/os"
+  require_relative "../mixin/os"
   provides "os", "os_version"
   depends "kernel"
 
diff --git a/lib/ohai/plugins/packages.rb b/lib/ohai/plugins/packages.rb
index f7054a15..56ab252b 100644
--- a/lib/ohai/plugins/packages.rb
+++ b/lib/ohai/plugins/packages.rb
@@ -104,7 +104,7 @@ Ohai.plugin(:Packages) do
   end
 
   collect_data(:windows) do
-    require "win32/registry"
+    require "win32/registry" unless defined?(Win32::Registry)
     packages Mash.new
     collect_programs_from_registry_key('Software\Microsoft\Windows\CurrentVersion\Uninstall')
     # on 64 bit systems, 32 bit programs are stored here
diff --git a/lib/ohai/plugins/passwd.rb b/lib/ohai/plugins/passwd.rb
index 70a30463..5519adc6 100644
--- a/lib/ohai/plugins/passwd.rb
+++ b/lib/ohai/plugins/passwd.rb
@@ -1,6 +1,6 @@
 
 Ohai.plugin(:Passwd) do
-  require "etc"
+  require "etc" unless defined?(Etc)
   provides "etc", "current_user"
   optional true
 
diff --git a/lib/ohai/plugins/scaleway.rb b/lib/ohai/plugins/scaleway.rb
index e1cb8a87..2b83acf3 100644
--- a/lib/ohai/plugins/scaleway.rb
+++ b/lib/ohai/plugins/scaleway.rb
@@ -15,8 +15,8 @@
 # limitations under the License.
 
 Ohai.plugin(:Scaleway) do
-  require "ohai/mixin/scaleway_metadata"
-  require "ohai/mixin/http_helper"
+  require_relative "../mixin/scaleway_metadata"
+  require_relative "../mixin/http_helper"
 
   include Ohai::Mixin::ScalewayMetadata
   include Ohai::Mixin::HttpHelper
diff --git a/lib/ohai/plugins/scsi.rb b/lib/ohai/plugins/scsi.rb
index 13081867..0dfc80f9 100644
--- a/lib/ohai/plugins/scsi.rb
+++ b/lib/ohai/plugins/scsi.rb
@@ -21,7 +21,7 @@ Ohai.plugin(:Lsscsi) do
   provides "scsi"
   optional true
 
-  require "mixlib/shellout"
+  require "mixlib/shellout" unless defined?(Mixlib::ShellOut)
 
   collect_data(:linux) do
     devices = Mash.new
diff --git a/lib/ohai/plugins/softlayer.rb b/lib/ohai/plugins/softlayer.rb
index 0f025c9c..34b2c343 100644
--- a/lib/ohai/plugins/softlayer.rb
+++ b/lib/ohai/plugins/softlayer.rb
@@ -19,7 +19,7 @@
 # limitations under the License.
 
 Ohai.plugin(:Softlayer) do
-  require "ohai/mixin/softlayer_metadata"
+  require_relative "../mixin/softlayer_metadata"
   include ::Ohai::Mixin::SoftlayerMetadata
 
   provides "softlayer"
diff --git a/lib/ohai/plugins/solaris2/dmi.rb b/lib/ohai/plugins/solaris2/dmi.rb
index 51f5fb05..ecbc6f2d 100644
--- a/lib/ohai/plugins/solaris2/dmi.rb
+++ b/lib/ohai/plugins/solaris2/dmi.rb
@@ -20,7 +20,7 @@ Ohai.plugin(:DMI) do
   provides "dmi"
 
   collect_data(:solaris2) do
-    require "ohai/common/dmi"
+    require_relative "../../common/dmi"
 
     # if we already have a "dmi" with keys (presumably from dmidecode), don't try smbios
     # note that a single key just means dmidecode exited with its version
diff --git a/lib/ohai/plugins/solaris2/virtualization.rb b/lib/ohai/plugins/solaris2/virtualization.rb
index d0187e87..3b3473f4 100644
--- a/lib/ohai/plugins/solaris2/virtualization.rb
+++ b/lib/ohai/plugins/solaris2/virtualization.rb
@@ -19,7 +19,7 @@
 #
 
 Ohai.plugin(:Virtualization) do
-  require "ohai/mixin/dmi_decode"
+  require_relative "../../mixin/dmi_decode"
   include Ohai::Mixin::DmiDecode
   provides "virtualization"
   depends "dmi"
diff --git a/lib/ohai/plugins/uptime.rb b/lib/ohai/plugins/uptime.rb
index a2294fb3..5883f13c 100644
--- a/lib/ohai/plugins/uptime.rb
+++ b/lib/ohai/plugins/uptime.rb
@@ -25,7 +25,7 @@
 #
 
 Ohai.plugin(:Uptime) do
-  require "ohai/mixin/seconds_to_human"
+  require_relative "../mixin/seconds_to_human"
   provides "uptime", "uptime_seconds"
   provides "idletime", "idletime_seconds" # linux only
 
diff --git a/lib/ohai/plugins/windows/fips.rb b/lib/ohai/plugins/windows/fips.rb
index 085c7f2c..27d36f2d 100644
--- a/lib/ohai/plugins/windows/fips.rb
+++ b/lib/ohai/plugins/windows/fips.rb
@@ -28,7 +28,7 @@ Ohai.plugin(:Fips) do
   collect_data(:windows) do
     fips Mash.new
 
-    require "openssl"
+    require "openssl" unless defined?(OpenSSL)
     if defined?(OpenSSL.fips_mode) && OpenSSL.fips_mode && !$FIPS_TEST_MODE
       fips["kernel"] = { "enabled" => true }
     else
diff --git a/lib/ohai/plugins/windows/virtualization.rb b/lib/ohai/plugins/windows/virtualization.rb
index b60aff8b..3a4e5532 100644
--- a/lib/ohai/plugins/windows/virtualization.rb
+++ b/lib/ohai/plugins/windows/virtualization.rb
@@ -20,7 +20,7 @@
 
 Ohai.plugin(:Virtualization) do
   provides "virtualization"
-  require "ohai/mixin/dmi_decode"
+  require_relative "../../mixin/dmi_decode"
   include Ohai::Mixin::DmiDecode
 
   collect_data(:windows) do
diff --git a/lib/ohai/provides_map.rb b/lib/ohai/provides_map.rb
index 0aba1939..d803d298 100644
--- a/lib/ohai/provides_map.rb
+++ b/lib/ohai/provides_map.rb
@@ -17,10 +17,10 @@
 # limitations under the License.
 #
 
-require "ohai/mash"
-require "ohai/exception"
-require "ohai/mixin/os"
-require "ohai/dsl"
+require_relative "mash"
+require_relative "exception"
+require_relative "mixin/os"
+require_relative "dsl"
 
 module Ohai
   class ProvidesMap
diff --git a/lib/ohai/runner.rb b/lib/ohai/runner.rb
index f11d936a..cc776618 100644
--- a/lib/ohai/runner.rb
+++ b/lib/ohai/runner.rb
@@ -17,7 +17,7 @@
 # limitations under the License
 #
 
-require "ohai/dsl"
+require_relative "dsl"
 require "benchmark"
 
 module Ohai
diff --git a/lib/ohai/system.rb b/lib/ohai/system.rb
index a19e19ca..b075c814 100644
--- a/lib/ohai/system.rb
+++ b/lib/ohai/system.rb
@@ -16,21 +16,21 @@
 # limitations under the License.
 #
 
-require "ohai/version"
-require "ohai/loader"
-require "ohai/log"
-require "ohai/mash"
-require "ohai/runner"
-require "ohai/dsl"
-require "ohai/mixin/command"
-require "ohai/mixin/os"
-require "ohai/mixin/string"
-require "ohai/mixin/constant_helper"
-require "ohai/provides_map"
-require "ohai/hints"
-require "mixlib/shellout"
-require "ohai/config"
-require "ffi_yajl"
+require_relative "version"
+require_relative "loader"
+require_relative "log"
+require_relative "mash"
+require_relative "runner"
+require_relative "dsl"
+require_relative "mixin/command"
+require_relative "mixin/os"
+require_relative "mixin/string"
+require_relative "mixin/constant_helper"
+require_relative "provides_map"
+require_relative "hints"
+require "mixlib/shellout" unless defined?(Mixlib::ShellOut)
+require_relative "config"
+require "ffi_yajl" unless defined?(FFI_Yajl)
 
 module Ohai
   # The class used by Ohai::Application and Chef to actually collect data
diff --git a/lib/ohai/util/win32.rb b/lib/ohai/util/win32.rb
index 5cf638d0..5d5ab156 100644
--- a/lib/ohai/util/win32.rb
+++ b/lib/ohai/util/win32.rb
@@ -21,7 +21,7 @@ module Ohai
     module Win32
       if RUBY_PLATFORM =~ /mswin|mingw|windows/
 
-        require "ffi"
+        require "ffi" unless defined?(FFI)
 
         extend FFI::Library