Conflicts: pkgs/applications/networking/mailreaders/sup/default.nix pkgs/development/compilers/ghc/7.8.3-binary.nix pkgs/development/interpreters/php/5.3.nix pkgs/development/interpreters/ruby/patches.nix pkgs/development/libraries/cairo/default.nix pkgs/development/libraries/poppler/default.nix pkgs/top-level/all-packages.nix
This fixes builds after #4419. Thanks to @vbgl for the original commit; I changed that as I'm not sure whether passing null values to buildInputs is clean. CC maintainers: @coroa, @peti, @phreedom, @robberer, @jcumming.