From f1f3d9f7f827efb13fc35bdabe29be16fc824e87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Soko=C5=82owski?= <jakub@status.im>
Date: Sun, 14 Nov 2021 19:34:06 +0100
Subject: [PATCH] mtr: fix JSON output format, add libjansson
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Currently if you try to use `mtr` with `-j`/`--json` flag you get:
```
mtr: invalid option -- 'j'
```
In order to make this work it has to be built with `libjansson`:
https://github.com/traviscross/mtr/issues/358

Signed-off-by: Jakub Sokołowski <jakub@status.im>
---
 pkgs/tools/networking/mtr/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/networking/mtr/default.nix b/pkgs/tools/networking/mtr/default.nix
index 1257c167e768..f9209158f6dd 100644
--- a/pkgs/tools/networking/mtr/default.nix
+++ b/pkgs/tools/networking/mtr/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchFromGitHub, autoreconfHook, pkg-config
-, libcap, ncurses
+, libcap, ncurses, jansson
 , withGtk ? false, gtk3 }:
 
 stdenv.mkDerivation rec {
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
-  buildInputs = [ ncurses ]
+  buildInputs = [ ncurses jansson ]
     ++ lib.optional withGtk gtk3
     ++ lib.optional stdenv.isLinux libcap;