Merge branch 'master' into staging-next

There ver very many conflicts, basically all due to
name -> pname+version.  Fortunately, almost everything was auto-resolved
by kdiff3, and for now I just fixed up a couple evaluation problems,
as verified by the tarball job.  There might be some fallback to these
conflicts, but I believe it should be minimal.

Hydra nixpkgs: ?compare=1538299

pkgs/tools/networking/nfdump/default.nix

@@ -2,7 +2,7 @@
 , autoconf, automake, libtool, pkg-config
 , bzip2, libpcap, flex, yacc }:
 
-let version = "1.6.17"; in
+let version = "1.6.18"; in
 
 stdenv.mkDerivation {
   pname = "nfdump";
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
     owner = "phaag";
     repo = "nfdump";
     rev = "v${version}";
-    sha256 = "1z8zpvd9jfi2raafcbkykw55y0hd4mp74jvna19h3k0g86mqkxya";
+    sha256 = "0hfgj9lghkjrjxww0jdk8gxr6g4gbmbdmfg9ddg5jj6gcra21gha";
   };
 
   nativeBuildInputs = [ autoconf automake flex libtool pkg-config yacc ];