diff --git a/src/libmain/loggers.cc b/src/libmain/loggers.cc
index 836ea3dc8..07d83a960 100644
--- a/src/libmain/loggers.cc
+++ b/src/libmain/loggers.cc
@@ -50,11 +50,6 @@ void setLogFormat(const std::string & logFormatStr)
 void setLogFormat(const LogFormat & logFormat)
 {
     defaultLogFormat = logFormat;
-    createDefaultLogger();
-}
-
-void createDefaultLogger()
-{
     logger = makeDefaultLogger();
 }
 
diff --git a/src/libmain/loggers.hh b/src/libmain/loggers.hh
index e5721420c..98b287fa7 100644
--- a/src/libmain/loggers.hh
+++ b/src/libmain/loggers.hh
@@ -16,6 +16,4 @@ enum class LogFormat {
 void setLogFormat(const std::string & logFormatStr);
 void setLogFormat(const LogFormat & logFormat);
 
-void createDefaultLogger();
-
 }
diff --git a/src/libmain/progress-bar.cc b/src/libmain/progress-bar.cc
index 17109b57e..4db49f02c 100644
--- a/src/libmain/progress-bar.cc
+++ b/src/libmain/progress-bar.cc
@@ -560,15 +560,4 @@ std::unique_ptr<Logger> makeProgressBar()
     return std::make_unique<ProgressBar>(isTTY());
 }
 
-void startProgressBar()
-{
-    logger = makeProgressBar();
-}
-
-void stopProgressBar()
-{
-    if (auto progressBar = dynamic_cast<ProgressBar *>(logger.get()))
-        progressBar->stop();
-}
-
 }
diff --git a/src/libmain/progress-bar.hh b/src/libmain/progress-bar.hh
index 83209e863..fc1b0fe78 100644
--- a/src/libmain/progress-bar.hh
+++ b/src/libmain/progress-bar.hh
@@ -7,8 +7,4 @@ namespace nix {
 
 std::unique_ptr<Logger> makeProgressBar();
 
-void startProgressBar();
-
-void stopProgressBar();
-
 }
diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index 30e76c349..bc2ffc9ba 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -361,7 +361,7 @@ RunPager::RunPager()
     if (!pager) pager = getenv("PAGER");
     if (pager && ((std::string) pager == "" || (std::string) pager == "cat")) return;
 
-    stopProgressBar();
+    logger->stop();
 
     Pipe toPager;
     toPager.create();
diff --git a/src/nix/build.cc b/src/nix/build.cc
index 3569b0cde..4ba6241ec 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -3,7 +3,6 @@
 #include "shared.hh"
 #include "store-api.hh"
 #include "local-fs-store.hh"
-#include "progress-bar.hh"
 
 #include <nlohmann/json.hpp>
 
@@ -120,7 +119,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
                 createOutLinks(outLink, toBuiltPaths(buildables), *store2);
 
         if (printOutputPaths) {
-            stopProgressBar();
+            logger->stop();
             for (auto & buildable : buildables) {
                 std::visit(overloaded {
                     [&](const BuiltPath::Opaque & bo) {
diff --git a/src/nix/cat.cc b/src/nix/cat.cc
index e0179c348..214d256e9 100644
--- a/src/nix/cat.cc
+++ b/src/nix/cat.cc
@@ -1,7 +1,6 @@
 #include "command.hh"
 #include "store-api.hh"
 #include "nar-accessor.hh"
-#include "progress-bar.hh"
 
 using namespace nix;
 
@@ -14,7 +13,7 @@ struct MixCat : virtual Args
         auto st = accessor->lstat(CanonPath(path));
         if (st.type != SourceAccessor::Type::tRegular)
             throw Error("path '%1%' is not a regular file", path);
-        stopProgressBar();
+        logger->stop();
 
         writeFull(getStandardOutput(), accessor->readFile(CanonPath(path)));
     }
diff --git a/src/nix/develop.cc b/src/nix/develop.cc
index deee89aa1..961962ebd 100644
--- a/src/nix/develop.cc
+++ b/src/nix/develop.cc
@@ -7,7 +7,6 @@
 #include "store-api.hh"
 #include "outputs-spec.hh"
 #include "derivations.hh"
-#include "progress-bar.hh"
 
 #ifndef _WIN32 // TODO re-enable on Windows
 # include "run.hh"
@@ -731,7 +730,7 @@ struct CmdPrintDevEnv : Common, MixJSON
     {
         auto buildEnvironment = getBuildEnvironment(store, installable).first;
 
-        stopProgressBar();
+        logger->stop();
 
         if (json) {
             logger->writeToStdout(buildEnvironment.toJSON());
diff --git a/src/nix/edit.cc b/src/nix/edit.cc
index 9cbab230b..49807da9e 100644
--- a/src/nix/edit.cc
+++ b/src/nix/edit.cc
@@ -3,7 +3,6 @@
 #include "shared.hh"
 #include "eval.hh"
 #include "attr-path.hh"
-#include "progress-bar.hh"
 #include "editor-for.hh"
 
 #include <unistd.h>
@@ -40,7 +39,7 @@ struct CmdEdit : InstallableValueCommand
             }
         }();
 
-        stopProgressBar();
+        logger->stop();
 
         auto args = editorFor(file, line);
 
diff --git a/src/nix/eval.cc b/src/nix/eval.cc
index 7811b77ed..e038d75c3 100644
--- a/src/nix/eval.cc
+++ b/src/nix/eval.cc
@@ -5,7 +5,6 @@
 #include "eval.hh"
 #include "eval-inline.hh"
 #include "value-to-json.hh"
-#include "progress-bar.hh"
 
 #include <nlohmann/json.hpp>
 
@@ -75,7 +74,7 @@ struct CmdEval : MixJSON, InstallableValueCommand, MixReadOnlyOption
         }
 
         if (writeTo) {
-            stopProgressBar();
+            logger->stop();
 
             if (fs::symlink_exists(*writeTo))
                 throw Error("path '%s' already exists", writeTo->string());
@@ -114,7 +113,7 @@ struct CmdEval : MixJSON, InstallableValueCommand, MixReadOnlyOption
         }
 
         else if (raw) {
-            stopProgressBar();
+            logger->stop();
             writeFull(getStandardOutput(), *state->coerceToString(noPos, *v, context, "while generating the eval command output"));
         }
 
diff --git a/src/nix/log.cc b/src/nix/log.cc
index 1a6f48f5e..2c35ed803 100644
--- a/src/nix/log.cc
+++ b/src/nix/log.cc
@@ -3,7 +3,6 @@
 #include "shared.hh"
 #include "store-api.hh"
 #include "log-store.hh"
-#include "progress-bar.hh"
 
 using namespace nix;
 
@@ -55,7 +54,7 @@ struct CmdLog : InstallableCommand
 
             auto log = logSub.getBuildLog(path);
             if (!log) continue;
-            stopProgressBar();
+            logger->stop();
             printInfo("got build log for '%s' from '%s'", installable->what(), logSub.getUri());
             writeFull(getStandardOutput(), *log);
             return;
diff --git a/src/nix/prefetch.cc b/src/nix/prefetch.cc
index 84c0224e2..ba2fd39d8 100644
--- a/src/nix/prefetch.cc
+++ b/src/nix/prefetch.cc
@@ -4,7 +4,7 @@
 #include "store-api.hh"
 #include "filetransfer.hh"
 #include "finally.hh"
-#include "progress-bar.hh"
+#include "loggers.hh"
 #include "tarfile.hh"
 #include "attr-path.hh"
 #include "eval-inline.hh"
@@ -190,10 +190,7 @@ static int main_nix_prefetch_url(int argc, char * * argv)
         if (args.size() > 2)
             throw UsageError("too many arguments");
 
-        Finally f([]() { stopProgressBar(); });
-
-        if (isTTY())
-          startProgressBar();
+        setLogFormat("bar");
 
         auto store = openStore();
         auto state = std::make_unique<EvalState>(myArgs.lookupPath, store, fetchSettings, evalSettings);
@@ -247,7 +244,7 @@ static int main_nix_prefetch_url(int argc, char * * argv)
         auto [storePath, hash] = prefetchFile(
             store, resolveMirrorUrl(*state, url), name, ha, expectedHash, unpack, executable);
 
-        stopProgressBar();
+        logger->stop();
 
         if (!printPath)
             printInfo("path is '%s'", store->printStorePath(storePath));
diff --git a/src/nix/run.cc b/src/nix/run.cc
index a9f9ef60f..897824d68 100644
--- a/src/nix/run.cc
+++ b/src/nix/run.cc
@@ -9,7 +9,6 @@
 #include "local-fs-store.hh"
 #include "finally.hh"
 #include "source-accessor.hh"
-#include "progress-bar.hh"
 #include "eval.hh"
 #include <filesystem>
 
@@ -34,7 +33,7 @@ void execProgramInStore(ref<Store> store,
     const Strings & args,
     std::optional<std::string_view> system)
 {
-    stopProgressBar();
+    logger->stop();
 
     restoreProcessContext();
 
diff --git a/src/nix/sigs.cc b/src/nix/sigs.cc
index 134d4f34a..10b99b452 100644
--- a/src/nix/sigs.cc
+++ b/src/nix/sigs.cc
@@ -3,7 +3,6 @@
 #include "shared.hh"
 #include "store-api.hh"
 #include "thread-pool.hh"
-#include "progress-bar.hh"
 
 #include <atomic>
 
@@ -175,7 +174,7 @@ struct CmdKeyGenerateSecret : Command
         if (!keyName)
             throw UsageError("required argument '--key-name' is missing");
 
-        stopProgressBar();
+        logger->stop();
         writeFull(getStandardOutput(), SecretKey::generate(*keyName).to_string());
     }
 };
@@ -197,7 +196,7 @@ struct CmdKeyConvertSecretToPublic : Command
     void run() override
     {
         SecretKey secretKey(drainFD(STDIN_FILENO));
-        stopProgressBar();
+        logger->stop();
         writeFull(getStandardOutput(), secretKey.toPublicKey().to_string());
     }
 };
diff --git a/src/nix/upgrade-nix.cc b/src/nix/upgrade-nix.cc
index 1e8032af6..398e533ce 100644
--- a/src/nix/upgrade-nix.cc
+++ b/src/nix/upgrade-nix.cc
@@ -7,7 +7,6 @@
 #include "eval-settings.hh"
 #include "attr-path.hh"
 #include "names.hh"
-#include "progress-bar.hh"
 #include "executable-path.hh"
 #include "self-exe.hh"
 
@@ -71,7 +70,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
         auto version = DrvName(storePath.name()).version;
 
         if (dryRun) {
-            stopProgressBar();
+            logger->stop();
             warn("would upgrade to version %s", version);
             return;
         }
@@ -89,7 +88,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
                 throw Error("could not verify that '%s' works", program);
         }
 
-        stopProgressBar();
+        logger->stop();
 
         {
             Activity act(*logger, lvlInfo, actUnknown,
diff --git a/src/nix/why-depends.cc b/src/nix/why-depends.cc
index e299585ff..ae5c45ae3 100644
--- a/src/nix/why-depends.cc
+++ b/src/nix/why-depends.cc
@@ -1,6 +1,5 @@
 #include "command.hh"
 #include "store-api.hh"
-#include "progress-bar.hh"
 #include "source-accessor.hh"
 #include "shared.hh"
 
@@ -110,8 +109,6 @@ struct CmdWhyDepends : SourceExprCommand, MixOperateOnOptions
         auto dependencyPath = *optDependencyPath;
         auto dependencyPathHash = dependencyPath.hashPart();
 
-        stopProgressBar(); // FIXME
-
         auto accessor = store->getFSAccessor();
 
         auto const inf = std::numeric_limits<size_t>::max();