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-rw-r--r--src/build-remote/build-remote.cc2
-rw-r--r--src/libstore/build.cc10
-rw-r--r--src/nix/progress-bar.cc3
3 files changed, 11 insertions, 4 deletions
diff --git a/src/build-remote/build-remote.cc b/src/build-remote/build-remote.cc
index 92ae99e168b7..d2fac09f8432 100644
--- a/src/build-remote/build-remote.cc
+++ b/src/build-remote/build-remote.cc
@@ -196,7 +196,7 @@ int main (int argc, char * * argv)
         }
 
 connected:
-        std::cerr << "# accept\n";
+        std::cerr << "# accept\n" << storeUri << "\n";
 
         auto inputs = readStrings<PathSet>(source);
         auto outputs = readStrings<PathSet>(source);
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 6e3d0a3ebb22..dcc48bef770b 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -852,6 +852,9 @@ private:
 
     std::map<ActivityId, Activity> builderActivities;
 
+    /* The remote machine on which we're building. */
+    std::string machineName;
+
 public:
     DerivationGoal(const Path & drvPath, const StringSet & wantedOutputs,
         Worker & worker, BuildMode buildMode = bmNormal);
@@ -1400,7 +1403,8 @@ void DerivationGoal::tryToBuild()
 
     auto started = [&]() {
         act = std::make_unique<Activity>(*logger, lvlInfo, actBuild,
-            fmt("building '%s'", drvPath), Logger::Fields{drvPath});
+            fmt("building '%s'", drvPath),
+            Logger::Fields{drvPath, hook ? machineName : ""});
         mcRunningBuilds = std::make_unique<MaintainCount<uint64_t>>(worker.runningBuilds);
         worker.updateProgress();
     };
@@ -1691,10 +1695,10 @@ HookReply DerivationGoal::tryBuildHook()
             throw;
     }
 
-    printMsg(lvlTalkative, format("using hook to build path(s) %1%") % showPaths(missingPaths));
-
     hook = std::move(worker.hook);
 
+    machineName = readLine(hook->fromHook.readSide.get());
+
     /* Tell the hook all the inputs that have to be copied to the
        remote system. */
     hook->sink << inputPaths;
diff --git a/src/nix/progress-bar.cc b/src/nix/progress-bar.cc
index 76138b2cce28..a33ea3423839 100644
--- a/src/nix/progress-bar.cc
+++ b/src/nix/progress-bar.cc
@@ -156,6 +156,9 @@ public:
             if (hasSuffix(name, ".drv"))
                 name.resize(name.size() - 4);
             i->s = fmt("building " ANSI_BOLD "%s" ANSI_NORMAL, name);
+            auto machineName = getS(fields, 1);
+            if (machineName != "")
+                i->s += fmt(" on " ANSI_BOLD "%s" ANSI_NORMAL, machineName);
         }
 
         if (type == actSubstitute) {