1 files changed, 14 insertions, 2 deletions
diff --git a/lib/bundler/fetcher/compact_index.rb b/lib/bundler/fetcher/compact_index.rb
index 5d703a3a..dcc9d57c 100644
--- a/lib/bundler/fetcher/compact_index.rb
+++ b/lib/bundler/fetcher/compact_index.rb
@@ -3,10 +3,10 @@ require "bundler/fetcher/base"
 require "bundler/worker"
 
 module Bundler
+  autoload :CompactIndexClient, "bundler/compact_index_client"
+
   class Fetcher
     class CompactIndex < Base
-      require "bundler/compact_index_client"
-
       def self.compact_index_request(method_name)
         method = instance_method(method_name)
         undef_method(method_name)
@@ -61,6 +61,7 @@ module Bundler
       compact_index_request :fetch_spec
 
       def available?
+        return nil unless md5_available?
         user_home = Bundler.user_home
         return nil unless user_home.directory? && user_home.writable?
         # Read info file checksums out of /versions, so we can know if gems are up to date
@@ -119,6 +120,17 @@ module Bundler
           Net::HTTPNotModified.new(nil, nil, nil)
         end
       end
+
+      def md5_available?
+        begin
+          require "openssl"
+          return false if defined?(OpenSSL::OPENSSL_FIPS) && OpenSSL::OPENSSL_FIPS
+        rescue LoadError
+          nil
+        end
+
+        true
+      end
     end
   end
 end