Adds file name with permissions mode, and yields an IO for writing the file to
Returns true if this gem is installable for the current platform.
Returns true if this gem is installable for the current platform.
Returns true if this specification is installable on this platform.
Attempts to activate the current {#possibility} @return [void]
Add the current {#possibility} to the dependency graph of the current {#state} @return [void]
Returns the cofactor of the group.
See the OpenSSL documentation for EC_GROUP_get_cofactor()