diff --git a/pkgs/development/libraries/liblxi/default.nix b/pkgs/development/libraries/liblxi/default.nix
index 8531c8ea7c4c5a4..24c454d4ee7e86c 100644
--- a/pkgs/development/libraries/liblxi/default.nix
+++ b/pkgs/development/libraries/liblxi/default.nix
@@ -3,17 +3,24 @@
 , libtirpc, rpcsvc-proto, avahi, libxml2
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "liblxi";
   version = "1.20";
 
   src = fetchFromGitHub {
     owner = "lxi-tools";
     repo = "liblxi";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-jS0huNkbyKrsJ3NkenrYtjkzLakOsTJpwlgSo98ribE=";
   };
 
+  postPatch = ''
+    # needed by darwin
+    sed -e 1i'#include <string.h>' \
+        -e 1i'#include <stdlib.h>' \
+        -i src/bonjour.c
+  '';
+
   nativeBuildInputs = [ meson ninja cmake pkg-config rpcsvc-proto ];
 
   buildInputs = lib.optionals (!stdenv.isDarwin) [
@@ -36,4 +43,4 @@ stdenv.mkDerivation rec {
     platforms = platforms.unix;
     maintainers = [ maintainers.vq ];
   };
-}
+})