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-rw-r--r--third_party/nix/src/libstore/build.cc10
-rw-r--r--third_party/nix/src/libstore/local-store.hh3
-rw-r--r--third_party/nix/src/libstore/remote-store.cc9
-rw-r--r--third_party/nix/src/libstore/remote-store.hh3
-rw-r--r--third_party/nix/src/libstore/rpc-store.cc21
-rw-r--r--third_party/nix/src/libstore/rpc-store.hh4
-rw-r--r--third_party/nix/src/libstore/store-api.cc3
-rw-r--r--third_party/nix/src/libstore/store-api.hh10
8 files changed, 33 insertions, 30 deletions
diff --git a/third_party/nix/src/libstore/build.cc b/third_party/nix/src/libstore/build.cc
index 91f80e51e0..4b9232b1a2 100644
--- a/third_party/nix/src/libstore/build.cc
+++ b/third_party/nix/src/libstore/build.cc
@@ -7,6 +7,7 @@
 #include <iostream>
 #include <map>
 #include <memory>
+#include <ostream>
 #include <queue>
 #include <regex>
 #include <sstream>
@@ -4687,8 +4688,9 @@ static void primeCache(Store& store, const PathSet& paths) {
   }
 }
 
-absl::Status LocalStore::buildPaths(const PathSet& drvPaths,
-                                    BuildMode buildMode) {
+absl::Status LocalStore::buildPaths(std::ostream& /* log_sink */,
+                                    const PathSet& drvPaths,
+                                    BuildMode build_mode) {
   Worker worker(*this);
 
   primeCache(*this, drvPaths);
@@ -4697,10 +4699,10 @@ absl::Status LocalStore::buildPaths(const PathSet& drvPaths,
   for (auto& i : drvPaths) {
     DrvPathWithOutputs i2 = parseDrvPathWithOutputs(i);
     if (isDerivation(i2.first)) {
-      goals.insert(worker.makeDerivationGoal(i2.first, i2.second, buildMode));
+      goals.insert(worker.makeDerivationGoal(i2.first, i2.second, build_mode));
     } else {
       goals.insert(worker.makeSubstitutionGoal(
-          i, buildMode == bmRepair ? Repair : NoRepair));
+          i, build_mode == bmRepair ? Repair : NoRepair));
     }
   }
 
diff --git a/third_party/nix/src/libstore/local-store.hh b/third_party/nix/src/libstore/local-store.hh
index f9e08e5e6b..669b878b66 100644
--- a/third_party/nix/src/libstore/local-store.hh
+++ b/third_party/nix/src/libstore/local-store.hh
@@ -156,7 +156,8 @@ class LocalStore : public LocalFSStore {
   Path addTextToStore(const std::string& name, const std::string& s,
                       const PathSet& references, RepairFlag repair) override;
 
-  absl::Status buildPaths(const PathSet& paths, BuildMode buildMode) override;
+  absl::Status buildPaths(std::ostream& log_sink, const PathSet& paths,
+                          BuildMode build_mode) override;
 
   BuildResult buildDerivation(const Path& drvPath, const BasicDerivation& drv,
                               BuildMode buildMode) override;
diff --git a/third_party/nix/src/libstore/remote-store.cc b/third_party/nix/src/libstore/remote-store.cc
index 6948d4e61d..e99c442c3d 100644
--- a/third_party/nix/src/libstore/remote-store.cc
+++ b/third_party/nix/src/libstore/remote-store.cc
@@ -460,18 +460,19 @@ Path RemoteStore::addTextToStore(const std::string& name, const std::string& s,
   return readStorePath(*this, conn->from);
 }
 
-absl::Status RemoteStore::buildPaths(const PathSet& drvPaths,
-                                     BuildMode buildMode) {
+absl::Status RemoteStore::buildPaths(std::ostream& /* log_sink */,
+                                     const PathSet& drvPaths,
+                                     BuildMode build_mode) {
   auto conn(getConnection());
   conn->to << wopBuildPaths;
   if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 13) {
     conn->to << drvPaths;
     if (GET_PROTOCOL_MINOR(conn->daemonVersion) >= 15) {
-      conn->to << buildMode;
+      conn->to << build_mode;
     } else
         /* Old daemons did not take a 'buildMode' parameter, so we
            need to validate it here on the client side.  */
-        if (buildMode != bmNormal) {
+        if (build_mode != bmNormal) {
       return absl::Status(
           absl::StatusCode::kInvalidArgument,
           "repairing or checking is not supported when building through the "
diff --git a/third_party/nix/src/libstore/remote-store.hh b/third_party/nix/src/libstore/remote-store.hh
index 4aad5a5d2f..60da6045a8 100644
--- a/third_party/nix/src/libstore/remote-store.hh
+++ b/third_party/nix/src/libstore/remote-store.hh
@@ -71,7 +71,8 @@ class RemoteStore : public virtual Store {
   Path addTextToStore(const std::string& name, const std::string& s,
                       const PathSet& references, RepairFlag repair) override;
 
-  absl::Status buildPaths(const PathSet& paths, BuildMode buildMode) override;
+  absl::Status buildPaths(std::ostream& log_sink, const PathSet& paths,
+                          BuildMode build_mode) override;
 
   BuildResult buildDerivation(const Path& drvPath, const BasicDerivation& drv,
                               BuildMode buildMode) override;
diff --git a/third_party/nix/src/libstore/rpc-store.cc b/third_party/nix/src/libstore/rpc-store.cc
index f3fc5582f3..92ad4e762b 100644
--- a/third_party/nix/src/libstore/rpc-store.cc
+++ b/third_party/nix/src/libstore/rpc-store.cc
@@ -4,6 +4,7 @@
 #include <filesystem>
 #include <memory>
 #include <optional>
+#include <ostream>
 
 #include <absl/status/status.h>
 #include <absl/strings/str_cat.h>
@@ -318,7 +319,8 @@ Path RpcStore::addTextToStore(const std::string& name,
   return result.path();
 }
 
-absl::Status RpcStore::buildPaths(const PathSet& paths, BuildMode buildMode) {
+absl::Status RpcStore::buildPaths(std::ostream& log_sink, const PathSet& paths,
+                                  BuildMode build_mode) {
   ClientContext ctx;
   proto::BuildPathsRequest request;
   for (const auto& path : paths) {
@@ -326,14 +328,7 @@ absl::Status RpcStore::buildPaths(const PathSet& paths, BuildMode buildMode) {
   }
 
   google::protobuf::Empty response;
-  request.set_mode(nix::BuildModeToProto(buildMode));
-
-  // TODO(tazjin): Temporary no-op sink used to discard build output,
-  // but satisfy the compiler. A real one is needed.
-  //
-  // Maybe this should just be stderr, considering that this is the
-  // *client*, but I'm not sure.
-  std::ostream discard_logs = DiscardLogsSink();
+  request.set_mode(nix::BuildModeToProto(build_mode));
 
   std::unique_ptr<grpc::ClientReader<proto::BuildEvent>> reader =
       stub_->BuildPaths(&ctx, request);
@@ -342,11 +337,11 @@ absl::Status RpcStore::buildPaths(const PathSet& paths, BuildMode buildMode) {
   while (reader->Read(&event)) {
     if (event.has_build_log()) {
       // TODO(tazjin): Include .path()?
-      discard_logs << event.build_log().line();
+      log_sink << event.build_log().line();
     } else {
-      discard_logs << std::endl
-                   << "Building path: " << event.building_path().path()
-                   << std::endl;
+      log_sink << std::endl
+               << "Building path: " << event.building_path().path()
+               << std::endl;
     }
 
     // has_result() is not in use in this call (for now)
diff --git a/third_party/nix/src/libstore/rpc-store.hh b/third_party/nix/src/libstore/rpc-store.hh
index b1c2945323..3a156e9e1a 100644
--- a/third_party/nix/src/libstore/rpc-store.hh
+++ b/third_party/nix/src/libstore/rpc-store.hh
@@ -67,8 +67,8 @@ class RpcStore : public LocalFSStore, public virtual Store {
                               const PathSet& references,
                               RepairFlag repair = NoRepair) override;
 
-  virtual absl::Status buildPaths(const PathSet& paths,
-                                  BuildMode buildMode) override;
+  absl::Status buildPaths(std::ostream& log_sink, const PathSet& paths,
+                          BuildMode build_mode) override;
 
   virtual BuildResult buildDerivation(const Path& drvPath,
                                       const BasicDerivation& drv,
diff --git a/third_party/nix/src/libstore/store-api.cc b/third_party/nix/src/libstore/store-api.cc
index 7972f50836..0ea6b1d62c 100644
--- a/third_party/nix/src/libstore/store-api.cc
+++ b/third_party/nix/src/libstore/store-api.cc
@@ -714,7 +714,8 @@ const Store::Stats& Store::getStats() {
   return stats;
 }
 
-absl::Status Store::buildPaths(const PathSet& paths, BuildMode) {
+absl::Status Store::buildPaths(std::ostream& /* log_sink */,
+                               const PathSet& paths, BuildMode) {
   for (auto& path : paths) {
     if (isDerivation(path)) {
       return absl::Status(absl::StatusCode::kUnimplemented,
diff --git a/third_party/nix/src/libstore/store-api.hh b/third_party/nix/src/libstore/store-api.hh
index 6c125ad276..91dd54cfe5 100644
--- a/third_party/nix/src/libstore/store-api.hh
+++ b/third_party/nix/src/libstore/store-api.hh
@@ -455,11 +455,13 @@ class Store : public std::enable_shared_from_this<Store>, public Config {
      output paths can be created by running the builder, after
      recursively building any sub-derivations. For inputs that are
      not derivations, substitute them. */
-  [[nodiscard]] virtual absl::Status buildPaths(const PathSet& paths,
-                                                BuildMode buildMode);
+  [[nodiscard]] virtual absl::Status buildPaths(std::ostream& log_sink,
+                                                const PathSet& paths,
+                                                BuildMode build_mode);
 
-  [[nodiscard]] absl::Status buildPaths(const PathSet& paths) {
-    return buildPaths(paths, bmNormal);
+  [[nodiscard]] absl::Status buildPaths(std::ostream& log_sink,
+                                        const PathSet& paths) {
+    return buildPaths(log_sink, paths, bmNormal);
   }
 
   /* Build a single non-materialized derivation (i.e. not from an
generated by cgit-pink 1.4.1 (git 2.44.2) at 2024-07-20T11ยท27+0000