Add expression for cabal-install 1.20.0.0
Updated OCaml package findlib
Updated OCaml package pcre
haskell-msgpack: add version 0.7.2.5
Updated react to 1.0.1
nethogs: Add package

nethogs is a small 'net top' tool, grouping bandwidth by process.
node.js - use bundled v8                                 :14.04-bugfix:

node needs v8 3.14, which is no longer maintained.
They bundle an in-tree version which does receive backports.
neoload: upgrade to 4.1.4 and fix mem issues
node-packages: upgrade all generated expressions
New package: lists and its dependency, list-extras (Haskell.)
postfix: Add version 2.11.0 as nixpkgs.postfix211

I think this version should replace the current nixpkgs.postfix,
but it could potentially break stuff since the version jump is
big (2.8 -> 2.11).
kde: “kdnssd” package is now called “zeroconf-ioslave”

Close #2358.
Don't create world-readable swapfiles
Remove some dead code
dhcpcd: Fix segfaults

This fixes several problems in the dhcpcd service:

* A segfault during startup, due to a race with udev (dhcpcd would get
  an ADD event from udev, causing it to re-add an interface that it
  already had, leading to a segfault later on).

* A hang/segfault processing "dhcpcd rebind" (which NixOS calls after
  waking up from suspend).

Also, add "lo" to the list of ignored interfaces. It usually ignores
"lo", but apparently not when it gets an ADD event from udev.
Make the misc test a bit more robust
Silence some Hydra evaluation warnings
Fix simpleTest function
Try again
Add haskell-http-kit