proxychains-ng: install default config, zsh completion

pkgs/tools/networking/proxychains-ng/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 }:
 
 stdenv.mkDerivation rec {
@@ -14,6 +15,18 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-uu/zN6W0ue526/3a9QeYg6J4HLaovZJVOYXksjouYok=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/rofl0r/proxychains-ng/commit/04023d3811d8ee34b498b429bac7a871045de59c.patch";
+      sha256 = "sha256-Xcg2kmAhj/OJn/RKJAxb9MOJNJQY7FXmxEIzQ5dvabo=";
+    })
+  ];
+
+  installFlags = [
+    "install-config"
+    "install-zsh-completion"
+  ];
+
   meta = with lib; {
     description = "A preloader which hooks calls to sockets in dynamically linked programs and redirects it through one or more socks/http proxies";
     homepage = "https://github.com/rofl0r/proxychains-ng";