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-rw-r--r--src/libstore/builtins.cc6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/libstore/builtins.cc b/src/libstore/builtins.cc
index 091a67428e4c..2a4396308399 100644
--- a/src/libstore/builtins.cc
+++ b/src/libstore/builtins.cc
@@ -7,14 +7,16 @@ void builtinFetchurl(const BasicDerivation & drv)
 {
     auto url = drv.env.find("url");
     if (url == drv.env.end()) throw Error("attribute ‘url’ missing");
-    printMsg(lvlInfo, format("downloading ‘%1%’...") % url->second);
 
     /* No need to do TLS verification, because we check the hash of
        the result anyway. */
     DownloadOptions options;
     options.verifyTLS = false;
 
-    auto data = downloadFile(url->second, options); // FIXME: show progress
+    /* Show a progress indicator, even though stderr is not a tty. */
+    options.forceProgress = true;
+
+    auto data = downloadFile(url->second, options);
 
     auto out = drv.env.find("out");
     if (out == drv.env.end()) throw Error("attribute ‘url’ missing");