Homebrew/homebrew — pull request #31063 by mflatt (2014-07-23 12:59:13+00:00)
Title: get Racket as source distribution instead of from GitHub repo

A source distribution for a release is configured with a suitable
package catalog, which avoids the problem reported as Racket PR 14648
(query at http://bugs.racket-lang.org/).

Using the "builtpkgs" variant of the source distribution makes the
installation work with pre-built packages, which enables faster installs
of Racket packages.