Do not use static-libgcc flag on Darwin
ncurses: apply a patch on Darwin for a clang bug
The folder $url/steam/archive seems to be empty...

Changed the URLs to the packages over to the steam folder inside <code>pool/steam/s/steam</code>. If the archive folder has been repopulated the next 24hrs ignore this.
proofgeneral_4_3_pre: Add expression needed for current prooftree
proofgeneral: Delete default.nix for proofgeneral
Merge pull request #3024 from third3ye/patch-4

The folder $url/steam/archive seems to be empty...
gsl: update to version 1.16
cppcheck: update from 1.64 to 1.65
haskell-network-transport-tcp: fix build with ghc < 7.8.2
Added distributed-process 0.5.
Bump binary version dependency of rank1dynamic, distributed-static, network-transport-* to 0.7.2.1.
retroshare: place plugins at proper place

Now they can be used.
Moved package overrides from haskell-packages.nix to haskell-defaults.nix.
Removed binary argument from networkTransport and networkTransportTcp
Add binary to networkTransport again.
Merge pull request #2983 from jwiegley/zlib

Do not use static-libgcc flag on Darwin
Merge pull request #2986 from jwiegley/ncurses

ncurses: apply a patch on Darwin for a clang bug
git-annex: Build on Darwin, let Cabal determine proper flags
Merge pull request #3031 from jwiegley/proofgeneral

proofgeneral_4_3_pre: Add expression needed for current prooftree
Merge remote-tracking branch 'upstream/master'
tig: enable command line history/completion support

Since version 2.0, tig can use readline for history/completion support,
so add readline as a build input.

Increases closure size from 53 MiB to 54 MiB.