DebugStackTracker class in one place

src/libutil/error.cc

@@ -221,6 +221,8 @@ static std::string indent(std::string_view indentFirst, std::string_view indentR
 
 std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool showTrace)
 {
+    std::cout << "showErrorInfo showTrace: " << showTrace << std::endl;
+  
     std::string prefix;
     switch (einfo.level) {
         case Verbosity::lvlError: {

src/libutil/logging.hh

@@ -38,6 +38,7 @@ typedef uint64_t ActivityId;
 struct LoggerSettings : Config
 {
     Setting<bool> showTrace{
+        // this, false, "show-trace",
         this, false, "show-trace",
         R"(
           Where Nix should print out a stack trace in case of Nix