Use getStandardError()

Author: edolstra

src/build-remote/build-remote.cc

@@ -51,7 +51,7 @@ static bool allSupportedLocally(Store & store, const std::set<std::string>& requ
 static int main_build_remote(int argc, char * * argv)
 {
     {
-        logger = makeJSONLogger(STDERR_FILENO);
+        logger = makeJSONLogger(getStandardError());
 
         /* Ensure we don't get any SSH passphrase or host key popups. */
         unsetenv("DISPLAY");

src/libmain/loggers.cc

@@ -27,7 +27,7 @@ Logger * makeDefaultLogger() {
     case LogFormat::rawWithLogs:
         return makeSimpleLogger(true);
     case LogFormat::internalJSON:
-        return makeJSONLogger(STDERR_FILENO);
+        return makeJSONLogger(getStandardError());
     case LogFormat::bar:
         return makeProgressBar();
     case LogFormat::barWithLogs: {

src/libstore/unix/build/local-derivation-goal.cc

@@ -2225,7 +2225,7 @@ void LocalDerivationGoal::runChild()
         /* Execute the program.  This should not return. */
         if (drv->isBuiltin()) {
             try {
-                logger = makeJSONLogger(STDERR_FILENO);
+                logger = makeJSONLogger(getStandardError());
 
                 std::map<std::string, Path> outputs;
                 for (auto & e : drv->outputs)