Add Nix build.

default.nix

@@ -1,10 +1,22 @@
 { pkgs ? import <nixpkgs> {} }:
 
-pkgs.stdenv.mkDerivation {
-  pname = "nix-dissector";
-  version = "1.0";
-  nativeBuildInputs = [ pkgs.autoreconfHook pkgs.pkg-config ];
-  buildInputs = [ pkgs.wireshark.dev pkgs.glib ];
-  src = pkgs.lib.cleanSource ./.;
-
+let
+  # There's a bug upstream. Using my fork until
+  # https://github.com/mechpen/sockdump/pull/23 gets merged and
+  # Nixpkgs bumped.
+  sockdump = pkgs.sockdump.overrideAttrs(old: {
+    src = pkgs.fetchFromGitHub {
+      owner = "NinjaTrappeur";
+      repo = "sockdump";
+      rev = "5a45e06bc73938334de1375127e82d240b1d7477";
+      hash = "sha256-q6jdwFhl2G9o2C0BVU6Xz7xizO00yaSQ2KSR/z4fixY=";
+    };
+  });
+in pkgs.writeShellApplication {
+  name = "snoop-nix-daemon";
+  runtimeInputs = [ pkgs.wireshark sockdump ];
+  text = ''
+    sudo ls
+    sudo sockdump --format pcap /nix/var/nix/daemon-socket/socket | wireshark -X lua_script:${./nix-packet.lua} -k -i -
+  '';
 }

flake.nix

@@ -7,8 +7,7 @@
 
   outputs = { self, nixpkgs }: {
 
-    packages.x86_64-linux.nix-dissector = import ./default.nix { inherit (nixpkgs.legacyPackages.x86_64-linux) pkgs; };
-
-    devShells.x86_64-linux.default = self.packages.x86_64-linux.nix-dissector;
+    packages.x86_64-linux.snoop-nix-daemon = import ./default.nix { inherit (nixpkgs.legacyPackages.x86_64-linux) pkgs; };
+    packages.x86_64-linux.default = self.packages.x86_64-linux.snoop-nix-daemon;
   };
 }