mxcl/homebrew — pull request #13253 by Sharpie (2012-07-06 20:59:55+00:00)
Title: quiet_system: Dump to /dev/null instead of closing

Some programs fail where they would otherwise succeed if stdout or stderr is
closed. For example, using mpicc from the mpich2 formula:

quiet_system 'mpicc', '--version'

Fails with:

LLVM ERROR: IO failure on output stream.

While

system 'mpicc', '--version'

Succeeds.