nixpkgs/pkgs/tools/networking/ntopng/0002-Remove-requirement-to-have-writeable-callback-dir.patch

diff --git a/src/Ntop.cpp b/src/Ntop.cpp
index 8de92a9..510418f 100644
--- a/src/Ntop.cpp
+++ b/src/Ntop.cpp
@@ -197,8 +197,7 @@ void Ntop::registerPrefs(Prefs *_prefs) {
   }
 
   if(stat(prefs->get_callbacks_dir(), &statbuf)
-     || (!(statbuf.st_mode & S_IFDIR))  /* It's not a directory */
-     || (!(statbuf.st_mode & S_IWRITE)) /* It's not writable    */) {
+     || (!(statbuf.st_mode & S_IFDIR))  /* It's not a directory */) {
     ntop->getTrace()->traceEvent(TRACE_ERROR, "Invalid directory %s specified",
 				 prefs->get_callbacks_dir());
     _exit(-1);