Remove startProgressBar()

src/libmain/progress-bar.cc

@@ -560,9 +560,4 @@ std::unique_ptr<Logger> makeProgressBar()
     return std::make_unique<ProgressBar>(isTTY());
 }
 
-void startProgressBar()
-{
-    logger = makeProgressBar();
-}
-
 }

src/libmain/progress-bar.hh

@@ -7,6 +7,4 @@ namespace nix {
 
 std::unique_ptr<Logger> makeProgressBar();
 
-void startProgressBar();
-
 }

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([]() { logger->stop(); });
-
-        if (isTTY())
-            startProgressBar();
+        setLogFormat("bar");
 
         auto store = openStore();
         auto state = std::make_unique<EvalState>(myArgs.lookupPath, store, fetchSettings, evalSettings);