diff --git a/src/libutil/logging.hh b/src/libutil/logging.hh
index 77b92fb51..e3fe613e8 100644
--- a/src/libutil/logging.hh
+++ b/src/libutil/logging.hh
@@ -100,7 +100,7 @@ public:
     virtual void writeToStdout(std::string_view s);
 
     template<typename... Args>
-    inline void stdout_(const std::string & fs, const Args & ... args)
+    inline void cout(const std::string & fs, const Args & ... args)
     {
         boost::format f(fs);
         formatHelper(f, args...);
diff --git a/src/nix/add-to-store.cc b/src/nix/add-to-store.cc
index df55d1bc4..04ab664b3 100644
--- a/src/nix/add-to-store.cc
+++ b/src/nix/add-to-store.cc
@@ -83,7 +83,7 @@ struct CmdAddToStore : MixDryRun, StoreCommand
             store->addToStore(info, source);
         }
 
-        logger->stdout_("%s", store->printStorePath(info.path));
+        logger->cout("%s", store->printStorePath(info.path));
     }
 };
 
diff --git a/src/nix/eval.cc b/src/nix/eval.cc
index 9689f2bdb..754ffc911 100644
--- a/src/nix/eval.cc
+++ b/src/nix/eval.cc
@@ -85,7 +85,7 @@ struct CmdEval : MixJSON, InstallableCommand
             printValueAsJSON(*state, true, *v, jsonOut, context);
         } else {
             state->forceValueDeep(*v);
-            logger->stdout_("%s", *v);
+            logger->cout("%s", *v);
         }
     }
 };
diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 64fc896d9..90ffaad7c 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -62,17 +62,17 @@ public:
 
 static void printFlakeInfo(const Store & store, const Flake & flake)
 {
-    logger->stdout_("Resolved URL:  %s", flake.resolvedRef.to_string());
-    logger->stdout_("Locked URL:    %s", flake.lockedRef.to_string());
+    logger->cout("Resolved URL:  %s", flake.resolvedRef.to_string());
+    logger->cout("Locked URL:    %s", flake.lockedRef.to_string());
     if (flake.description)
-        logger->stdout_("Description:   %s", *flake.description);
-    logger->stdout_("Path:          %s", store.printStorePath(flake.sourceInfo->storePath));
+        logger->cout("Description:   %s", *flake.description);
+    logger->cout("Path:          %s", store.printStorePath(flake.sourceInfo->storePath));
     if (auto rev = flake.lockedRef.input.getRev())
-        logger->stdout_("Revision:      %s", rev->to_string(Base16, false));
+        logger->cout("Revision:      %s", rev->to_string(Base16, false));
     if (auto revCount = flake.lockedRef.input.getRevCount())
-        logger->stdout_("Revisions:     %s", *revCount);
+        logger->cout("Revisions:     %s", *revCount);
     if (auto lastModified = flake.lockedRef.input.getLastModified())
-        logger->stdout_("Last modified: %s",
+        logger->cout("Last modified: %s",
             std::put_time(std::localtime(&*lastModified), "%F %T"));
 }
 
@@ -140,7 +140,7 @@ struct CmdFlakeInfo : FlakeCommand, MixJSON
 
         if (json) {
             auto json = flakeToJson(*store, flake);
-            logger->stdout_("%s", json.dump());
+            logger->cout("%s", json.dump());
         } else
             printFlakeInfo(*store, flake);
     }
@@ -158,9 +158,9 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
         auto flake = lockFlake();
 
         if (json)
-            logger->stdout_("%s", flake.lockFile.toJson());
+            logger->cout("%s", flake.lockFile.toJson());
         else {
-            logger->stdout_("%s", flake.flake.lockedRef);
+            logger->cout("%s", flake.flake.lockedRef);
 
             std::unordered_set<std::shared_ptr<Node>> visited;
 
@@ -172,7 +172,7 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
                     bool last = i + 1 == node.inputs.size();
 
                     if (auto lockedNode = std::get_if<0>(&input.second)) {
-                        logger->stdout_("%s" ANSI_BOLD "%s" ANSI_NORMAL ": %s",
+                        logger->cout("%s" ANSI_BOLD "%s" ANSI_NORMAL ": %s",
                             prefix + (last ? treeLast : treeConn), input.first,
                             *lockedNode ? (*lockedNode)->lockedRef : flake.flake.lockedRef);
 
@@ -180,7 +180,7 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
 
                         if (firstVisit) recurse(**lockedNode, prefix + (last ? treeNull : treeLine));
                     } else if (auto follows = std::get_if<1>(&input.second)) {
-                        logger->stdout_("%s" ANSI_BOLD "%s" ANSI_NORMAL " follows input '%s'",
+                        logger->cout("%s" ANSI_BOLD "%s" ANSI_NORMAL " follows input '%s'",
                             prefix + (last ? treeLast : treeConn), input.first,
                             printInputPath(*follows));
                     }
@@ -811,7 +811,7 @@ struct CmdFlakeShow : FlakeCommand
             try {
                 auto recurse = [&]()
                 {
-                    logger->stdout_("%s", headerPrefix);
+                    logger->cout("%s", headerPrefix);
                     auto attrs = visitor.getAttrs();
                     for (const auto & [i, attr] : enumerate(attrs)) {
                         bool last = i + 1 == attrs.size();
@@ -837,7 +837,7 @@ struct CmdFlakeShow : FlakeCommand
                     }
                     */
 
-                    logger->stdout_("%s: %s '%s'",
+                    logger->cout("%s: %s '%s'",
                         headerPrefix,
                         attrPath.size() == 2 && attrPath[0] == "devShell" ? "development environment" :
                         attrPath.size() == 3 && attrPath[0] == "checks" ? "derivation" :
@@ -885,7 +885,7 @@ struct CmdFlakeShow : FlakeCommand
                     if (attrPath.size() == 1)
                         recurse();
                     else if (!showLegacy)
-                        logger->stdout_("%s: " ANSI_YELLOW "omitted" ANSI_NORMAL " (use '--legacy' to show)", headerPrefix);
+                        logger->cout("%s: " ANSI_YELLOW "omitted" ANSI_NORMAL " (use '--legacy' to show)", headerPrefix);
                     else {
                         if (visitor.isDerivation())
                             showDerivation();
@@ -902,7 +902,7 @@ struct CmdFlakeShow : FlakeCommand
                     auto aType = visitor.maybeGetAttr("type");
                     if (!aType || aType->getString() != "app")
                         throw EvalError("not an app definition");
-                    logger->stdout_("%s: app", headerPrefix);
+                    logger->cout("%s: app", headerPrefix);
                 }
 
                 else if (
@@ -910,11 +910,11 @@ struct CmdFlakeShow : FlakeCommand
                     (attrPath.size() == 2 && attrPath[0] == "templates"))
                 {
                     auto description = visitor.getAttr("description")->getString();
-                    logger->stdout_("%s: template: " ANSI_BOLD "%s" ANSI_NORMAL, headerPrefix, description);
+                    logger->cout("%s: template: " ANSI_BOLD "%s" ANSI_NORMAL, headerPrefix, description);
                 }
 
                 else {
-                    logger->stdout_("%s: %s",
+                    logger->cout("%s: %s",
                         headerPrefix,
                         attrPath.size() == 1 && attrPath[0] == "overlay" ? "Nixpkgs overlay" :
                         attrPath.size() == 2 && attrPath[0] == "nixosConfigurations" ? "NixOS configuration" :
diff --git a/src/nix/hash.cc b/src/nix/hash.cc
index 52e41e50c..945d8e990 100644
--- a/src/nix/hash.cc
+++ b/src/nix/hash.cc
@@ -73,7 +73,7 @@ struct CmdHash : Command
 
             Hash h = hashSink->finish().first;
             if (truncate && h.hashSize > 20) h = compressHash(h, 20);
-            logger->stdout_(h.to_string(base, base == SRI));
+            logger->cout(h.to_string(base, base == SRI));
         }
     }
 };
@@ -107,7 +107,7 @@ struct CmdToBase : Command
     void run() override
     {
         for (auto s : args)
-            logger->stdout_(Hash::parseAny(s, ht).to_string(base, base == SRI));
+            logger->cout(Hash::parseAny(s, ht).to_string(base, base == SRI));
     }
 };
 
diff --git a/src/nix/ls.cc b/src/nix/ls.cc
index b1cf92692..a9664e7c3 100644
--- a/src/nix/ls.cc
+++ b/src/nix/ls.cc
@@ -37,11 +37,11 @@ struct MixLs : virtual Args, MixJSON
                 auto line = fmt("%s %20d %s", tp, st.fileSize, relPath);
                 if (st.type == FSAccessor::Type::tSymlink)
                     line += " -> " + accessor->readLink(curPath);
-                logger->stdout_(line);
+                logger->cout(line);
                 if (recursive && st.type == FSAccessor::Type::tDirectory)
                     doPath(st, curPath, relPath, false);
             } else {
-                logger->stdout_(relPath);
+                logger->cout(relPath);
                 if (recursive) {
                     auto st = accessor->stat(curPath);
                     if (st.type == FSAccessor::Type::tDirectory)
diff --git a/src/nix/profile.cc b/src/nix/profile.cc
index f97df4d9e..def7db03b 100644
--- a/src/nix/profile.cc
+++ b/src/nix/profile.cc
@@ -389,7 +389,7 @@ struct CmdProfileInfo : virtual EvalCommand, virtual StoreCommand, MixDefaultPro
 
         for (size_t i = 0; i < manifest.elements.size(); ++i) {
             auto & element(manifest.elements[i]);
-            logger->stdout_("%d %s %s %s", i,
+            logger->cout("%d %s %s %s", i,
                 element.source ? element.source->originalRef.to_string() + "#" + element.source->attrPath : "-",
                 element.source ? element.source->resolvedRef.to_string() + "#" + element.source->attrPath : "-",
                 concatStringsSep(" ", store->printStorePathSet(element.storePaths)));
diff --git a/src/nix/registry.cc b/src/nix/registry.cc
index afa3503b8..941785e55 100644
--- a/src/nix/registry.cc
+++ b/src/nix/registry.cc
@@ -26,7 +26,7 @@ struct CmdRegistryList : StoreCommand
         for (auto & registry : registries) {
             for (auto & entry : registry->entries) {
                 // FIXME: format nicely
-                logger->stdout_("%s %s %s",
+                logger->cout("%s %s %s",
                     registry->type == Registry::Flag   ? "flags " :
                     registry->type == Registry::User   ? "user  " :
                     registry->type == Registry::System ? "system" :
diff --git a/src/nix/search.cc b/src/nix/search.cc
index 88815efdb..2f7eb23bb 100644
--- a/src/nix/search.cc
+++ b/src/nix/search.cc
@@ -147,13 +147,13 @@ struct CmdSearch : InstallableCommand, MixJSON
                             jsonElem.attr("description", description);
                         } else {
                             auto name2 = hilite(name.name, nameMatch, "\e[0;2m");
-                            if (results > 1) logger->stdout_("");
-                            logger->stdout_(
+                            if (results > 1) logger->cout("");
+                            logger->cout(
                                 "* %s%s",
                                 wrap("\e[0;1m", hilite(attrPath2, attrPathMatch, "\e[0;1m")),
                                 name.version != "" ? " (" + name.version + ")" : "");
                             if (description != "")
-                                logger->stdout_(
+                                logger->cout(
                                     "  %s", hilite(description, descriptionMatch, ANSI_NORMAL));
                         }
                     }
diff --git a/src/nix/show-config.cc b/src/nix/show-config.cc
index 01a49f107..328cd2ff2 100644
--- a/src/nix/show-config.cc
+++ b/src/nix/show-config.cc
@@ -20,12 +20,12 @@ struct CmdShowConfig : Command, MixJSON
     {
         if (json) {
             // FIXME: use appropriate JSON types (bool, ints, etc).
-            logger->stdout_("%s", globalConfig.toJSON().dump());
+            logger->cout("%s", globalConfig.toJSON().dump());
         } else {
             std::map<std::string, Config::SettingInfo> settings;
             globalConfig.getSettings(settings);
             for (auto & s : settings)
-                logger->stdout_("%s = %s", s.first, s.second.value);
+                logger->cout("%s = %s", s.first, s.second.value);
         }
     }
 };
diff --git a/src/nix/why-depends.cc b/src/nix/why-depends.cc
index cbfc9b948..f49d19ab2 100644
--- a/src/nix/why-depends.cc
+++ b/src/nix/why-depends.cc
@@ -156,7 +156,7 @@ struct CmdWhyDepends : SourceExprCommand
             auto pathS = store->printStorePath(node.path);
 
             assert(node.dist != inf);
-            logger->stdout_("%s%s%s%s" ANSI_NORMAL,
+            logger->cout("%s%s%s%s" ANSI_NORMAL,
                 firstPad,
                 node.visited ? "\e[38;5;244m" : "",
                 firstPad != "" ? "→ " : "",