haskell/cabal — pull request #1305 by 23Skidoo (2013-05-01 23:27:04+00:00)
Title: Create source archives by running 'setup sdist --output-directory'.

And also use `setup sdist --list-sources` for the timestamp check. This makes `cabal sdist` and the timestamp check work for packages that use custom preprocessors (issue #403).