xmlstarlet: update from 1.5.0 to 1.6.1
xmlsec: update from 1.2.19 to 1.2.20
isocodes: update from 3.51 to 3.56
remove unused parameter from gzip derivation
less: update from 468 to 470
libbsd: update from 0.3.0 to 0.7.0
ocamlPackages.calendar: update from 2.03.2 to 2.5
ocamlPackages.ocaml_oasis: update from 0.4.1 to 0.4.4
ocamlPackages.ocaml_ssl: update from 0.4.4 to 0.4.7
ocamlPackages.twt: update from 0.93.2 to 0.931
ocamlPackages.utop: update from 1.14 to 1.15
ocaml-lablgl: fixes the META file
camlimages: fixes the spelling of propagatedBuildInputs
lablgtk: update 2.16.0 -> 2.18.2
Update ocamlfind to version 1.5.3
Revert "ocamlPackages.twt: update from 0.93.2 to 0.931"

This reverts commit 684a9e22a15cccbe3f4b3b3632520b4c59e6c877.
cabal2nix: fix build with old versions of GHC
haskell-yst: update to version 0.4.1.1
haskell-zeromq4-haskell: update to version 0.6.2
haskell-conduit-extra: don't run the test suite to avoid spurious build errors

https://github.com/snoyberg/conduit/issues/177