haskell/cabal — pull request #958 by 23Skidoo (2012-06-28 08:21:03+00:00)
Title: Implement the setup executable cache.

This patch implements caching of the setup executables, which significantly speeds up parallel builds.

One potential issue is that the cache directory is unconditionally set to `~/.cabal/setup-exe-cache`. When using `cabal-dev`, perhaps we want the setup exe cache to live in the sandbox directory?