title: How do i use runhaskell with cabal-dev?
body: <p>Unfortunately cabal-dev ghci does not work in this project, i get an error:</p>
  
  <pre><code>Loading package download-0.3.2 ... linking ... 
  ghc: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
  ghc: unable to load package `download-0.3.2'
  </code></pre>
  
  <p>So i try runhaskell, but it uses the packages that come installed with cabal instead of cabal-dev and thus fails.</p>
  
  <p>update:
  runhaskell produces the same error:</p>
  
  <pre><code>$ runhaskell -isrc:src/test -package-conf=cabal-dev/packages-7.4.1.conf src/test/Test.hs
  Test.hs: /home/stulli/haskell/ifdl/cabal-dev//lib/download-0.3.2/ghc-7.4.1/HSdownload-0.3.2.o: unknown symbol `stat64'
  Test.hs: Test.hs: unable to load package `download-0.3.2'
  </code></pre>
  
  <p>cabal-dev install on the other hand works without problems.</p>