2 files changed, 6 insertions, 3 deletions
diff --git a/third_party/nix/src/nix-env/nix-env.cc b/third_party/nix/src/nix-env/nix-env.cc
index 7502a648d8c1..e42fc29c2267 100644
--- a/third_party/nix/src/nix-env/nix-env.cc
+++ b/third_party/nix/src/nix-env/nix-env.cc
@@ -722,8 +722,10 @@ static void opSet(Globals& globals, Strings opFlags, Strings opArgs) {
     if (globals.dryRun) {
       return;
     }
+    auto discard_logs = DiscardLogsSink();
     nix::util::OkOrThrow(globals.state->store->buildPaths(
-        paths, globals.state->repair != 0u ? bmRepair : bmNormal));
+        discard_logs, paths,
+        globals.state->repair != 0u ? bmRepair : bmNormal));
   } else {
     printMissing(globals.state->store, {drv.queryOutPath()});
     if (globals.dryRun) {
diff --git a/third_party/nix/src/nix-env/user-env.cc b/third_party/nix/src/nix-env/user-env.cc
index dac0c52a81b7..e3124a60e385 100644
--- a/third_party/nix/src/nix-env/user-env.cc
+++ b/third_party/nix/src/nix-env/user-env.cc
@@ -38,8 +38,9 @@ bool createUserEnv(EvalState& state, DrvInfos& elems, const Path& profile,
   }
 
   DLOG(INFO) << "building user environment dependencies";
+  auto discard_logs = DiscardLogsSink();
   util::OkOrThrow(state.store->buildPaths(
-      drvsToBuild, state.repair != 0u ? bmRepair : bmNormal));
+      discard_logs, drvsToBuild, state.repair != 0u ? bmRepair : bmNormal));
 
   /* Construct the whole top level derivation. */
   PathSet references;
@@ -139,7 +140,7 @@ bool createUserEnv(EvalState& state, DrvInfos& elems, const Path& profile,
   /* Realise the resulting store expression. */
   DLOG(INFO) << "building user environment";
   util::OkOrThrow(state.store->buildPaths(
-      {topLevelDrv}, state.repair != 0u ? bmRepair : bmNormal));
+      discard_logs, {topLevelDrv}, state.repair != 0u ? bmRepair : bmNormal));
 
   /* Switch the current user environment to the output path. */
   auto store2 = state.store.dynamic_pointer_cast<LocalFSStore>();