packetdrill: 1.0 -> unstable-2020-08-22, fix build

also switch to cmake build

(cherry picked from commit 87fad4d)

pkgs/tools/networking/packetdrill/default.nix

@@ -1,24 +1,36 @@
-{ stdenv, fetchFromGitHub, bison, flex }:
-stdenv.mkDerivation {
-  version = "1.0";
+{ stdenv, fetchFromGitHub, bison, flex, cmake, libpcap }:
+stdenv.mkDerivation rec {
   pname = "packetdrill";
+  version = "unstable-2020-08-22";
+
   src = fetchFromGitHub {
     owner = "google";
     repo = "packetdrill";
-    rev = "58a7865c47e3a71e92ca0e4cc478c320e1c35f82";
-    sha256 = "09sqiakmn63idfjhy2ddf1456sfhi8yhsbp8lxvc1yfjikjxwwbc";
+    rev = "68a34fa73cf221e5f52d6fa4f203bcd93062be1b";
+    sha256 = "0djkwb6l2959f44d98vwb092rghf0qmii8391vrpxqb99j6pv4h6";
   };
   setSourceRoot = ''
     export sourceRoot=$(realpath */gtests/net/packetdrill)
   '';
+
   NIX_CFLAGS_COMPILE = [
     "-Wno-error=unused-result"
     "-Wno-error=stringop-truncation"
     "-Wno-error=address-of-packed-member"
   ];
-  nativeBuildInputs = [ bison flex ];
-  patches = [ ./nix.patch ];
-  enableParallelBuilding = true;
+  nativeBuildInputs = [ bison flex cmake libpcap ];
+  buildInputs = [ libpcap ];
+
+  installPhase = ''
+    install -m 0755 -t $out/bin -D \
+      packetdrill \
+      packet_parser_test \
+      packet_to_string_test \
+      checksum_test
+    mkdir -p $out/share
+    cp -r ../tests $out/share/packetdrill-tests
+  '';
+
   meta = {
     description = "Quick, precise tests for entire TCP/UDP/IPv4/IPv6 network stacks";
     homepage = "https://github.com/google/packetdrill";