NixOS/nixpkgs — pull request #4147 by cstrahan (2014-09-18 15:51:20+00:00)
Title: Fix the new Ruby interpreters (fixes #3509).

Ruby >= 2.1.0 will try to download config.{sub,guess} if not already present.
This provides both files in a pure manner, and also deletes the download script
to prevent any future confusion.

(Fixes #3509)