Unify the printing of the logs between bar-with-logs and raw

Make the printing of the build logs systematically go through the
logger, and replicate the behavior of `no-build-output` by having two
different loggers (one that prints the build logs and one that doesn't)

src/libmain/loggers.cc

@@ -8,6 +8,8 @@ LogFormat defaultLogFormat = LogFormat::raw;
 LogFormat parseLogFormat(const string &logFormatStr) {
     if (logFormatStr == "raw")
         return LogFormat::raw;
+    else if (logFormatStr == "raw-with-logs")
+        return LogFormat::rawWithLogs;
     else if (logFormatStr == "internal-json")
         return LogFormat::internalJson;
     else if (logFormatStr == "bar")
@@ -21,7 +23,9 @@ LogFormat parseLogFormat(const string &logFormatStr) {
 Logger *makeDefaultLogger() {
     switch (defaultLogFormat) {
     case LogFormat::raw:
-        return makeSimpleLogger();
+        return makeSimpleLogger(false);
+    case LogFormat::rawWithLogs:
+        return makeSimpleLogger(true);
     case LogFormat::internalJson:
         return makeJSONLogger(*makeSimpleLogger());
     case LogFormat::bar:

src/libmain/loggers.hh

@@ -6,6 +6,7 @@ namespace nix {
 
 enum class LogFormat {
   raw,
+  rawWithLogs,
   internalJson,
   bar,
   barWithLogs,

src/libmain/shared.cc

@@ -2,6 +2,7 @@
 #include "shared.hh"
 #include "store-api.hh"
 #include "util.hh"
+#include "loggers.hh"
 
 #include <algorithm>
 #include <cctype>
@@ -169,7 +170,7 @@ LegacyArgs::LegacyArgs(const std::string & programName,
         .longName = "no-build-output",
         .shortName = 'Q',
         .description = "do not show build output",
-        .handler = {&settings.verboseBuild, false},
+        .handler = {[&]() {setLogFormat(LogFormat::raw); }},
     });
 
     addFlag({