dotconf: update from 1.0.13 to 1.3 and adopt it
darcs: link this binary statically to avoid run-time dependencies on GHC and friends
git-annex: link this binary statically to improve start-up times and to get rid of some run-time dependencies

https://github.com/NixOS/nixpkgs/issues/4239
haskell-jwt: re-generate with cabal2nix