From 7d8ee80dab827843f9607e2b6073d0948f45d29d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Fri, 1 Jan 2016 10:01:36 +0100
Subject: [PATCH] avahi: don't install broken symlinks

/cc maintainer @lovek323 and @wkennington who added these links 4118e632e84.
---
 pkgs/development/libraries/avahi/default.nix | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/avahi/default.nix b/pkgs/development/libraries/avahi/default.nix
index 6c8fe6e112b7..199379ad401f 100644
--- a/pkgs/development/libraries/avahi/default.nix
+++ b/pkgs/development/libraries/avahi/default.nix
@@ -36,12 +36,15 @@ stdenv.mkDerivation rec {
     avahi-core/socket.c
   '';
 
-  postInstall = ''
+  postInstall =
     # Maintain compat for mdnsresponder and howl
-    ${if withLibdnssdCompat then "ln -s avahi-compat-libdns_sd/dns_sd.h $out/include/dns_sd.h" else ""}
+    stdenv.lib.optionalString withLibdnssdCompat ''
+      ln -s avahi-compat-libdns_sd/dns_sd.h "$out/include/dns_sd.h"
+    '';
+  /*  # these don't exist (anymore?)
     ln -s avahi-compat-howl $out/include/howl
     ln -s avahi-compat-howl.pc $out/lib/pkgconfig/howl.pc
-  '';
+  */
 
   meta = with stdenv.lib; {
     description = "mDNS/DNS-SD implementation";