* The default verbosity level of all Nix commands is now lvlInfo.

* Builder output is written to standard error by default.
  * The option `-B' is gone.
  * The option `-Q' suppresses builder output.

The result of this is that most Nix invocations shouldn't need any
flags w.r.t. logging.

src/libmain/shared.cc

@@ -126,7 +126,9 @@ static void initAndRun(int argc, char * * argv)
             setLogType(*i);
         }
         else if (arg == "--build-output" || arg == "-B")
-            buildVerbosity = lvlError; /* lowest */
+            ; /* !!! obsolete - remove eventually */
+        else if (arg == "--no-build-output" || arg == "-Q")
+            buildVerbosity = lvlVomit;
         else if (arg == "--help") {
             printHelp();
             return;

src/libstore/globals.cc

@@ -12,6 +12,6 @@ bool keepGoing = false;
 
 bool tryFallback = false;
 
-Verbosity buildVerbosity = lvlDebug;
+Verbosity buildVerbosity = lvlInfo;
 
 unsigned int maxBuildJobs = 1;

src/libutil/util.cc

@@ -243,7 +243,7 @@ void writeStringToFile(const Path & path, const string & s)
 
 
 LogType logType = ltPretty;
-Verbosity verbosity = lvlError;
+Verbosity verbosity = lvlInfo;
 
 static int nestingLevel = 0;
 

src/nix-env/main.cc

@@ -704,9 +704,6 @@ static void opDefaultExpr(Globals & globals,
 
 void run(Strings args)
 {
-    /* Use a higher default verbosity (lvlInfo). */
-    verbosity = (Verbosity) ((int) verbosity + 1);
-
     Strings opFlags, opArgs;
     Operation op = 0;