Required files
rubygems/defaults
rbconfig
rubygems/deprecate
zlib
fileutils
stringio
zlib
stringio
zlib
zlib
psych
rubygems/psych_additions
rubygems/psych_tree
yaml
rubygems/syck_hack
rubygems/user_interaction
rbconfig/datadir
rubygems/exceptions
rubygems/defaults/operating_system
rubygems/custom_require
rubygems/psych_tree
rubygems/user_interaction
net/http
digest
digest
fileutils
find
digest
rubygems/installer