5 files changed, 8 insertions, 3 deletions
diff --git a/src/libstore/binary-cache-store.cc b/src/libstore/binary-cache-store.cc
index e9413cf99..ea643fd31 100644
--- a/src/libstore/binary-cache-store.cc
+++ b/src/libstore/binary-cache-store.cc
@@ -16,6 +16,7 @@
 #include <future>
 #include <regex>
 #include <fstream>
+#include <sstream>
 
 #include <nlohmann/json.hpp>
 
diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc
index 479b4ffeb..99468d420 100644
--- a/src/libstore/build/local-derivation-goal.cc
+++ b/src/libstore/build/local-derivation-goal.cc
@@ -64,10 +64,13 @@ extern "C" int sandbox_init_with_parameters(const char *profile, uint64_t flags,
 
 namespace nix {
 
+namespace {
 /**
  * The system for which Nix is compiled.
  */
-constexpr std::string_view nativeSystem = SYSTEM;
+[[gnu::unused]]
+constexpr const std::string_view nativeSystem = SYSTEM;
+}
 
 void handleDiffHook(
     uid_t uid, uid_t gid,
diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index 420fc8bfe..641910bd7 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -14,6 +14,8 @@
 #include "derivations.hh"
 #include "args.hh"
 
+#include <sstream>
+
 namespace nix::daemon {
 
 Sink & operator << (Sink & sink, const Logger::Fields & fields)
diff --git a/src/libstore/filetransfer.cc b/src/libstore/filetransfer.cc
index 76da8e415..fd341b2f0 100644
--- a/src/libstore/filetransfer.cc
+++ b/src/libstore/filetransfer.cc
@@ -196,7 +196,6 @@ struct curlFileTransfer : public FileTransfer
                             result.immutableUrl = match.str(1);
                         else
                             debug("got invalid link header '%s'", value);
-                        warn("foo %s", value);
                     }
                 }
             }
diff --git a/src/libstore/machines.cc b/src/libstore/machines.cc
index cdd1e1c2c..833482815 100644
--- a/src/libstore/machines.cc
+++ b/src/libstore/machines.cc
@@ -140,7 +140,7 @@ static Machine parseBuilderLine(const std::string & line)
     };
 
     auto parseFloatField = [&](size_t fieldIndex) {
-        const auto result = string2Int<float>(tokens[fieldIndex]);
+        const auto result = string2Float<float>(tokens[fieldIndex]);
         if (!result) {
             throw FormatError("bad machine specification: failed to convert column #%lu in a row: '%s' to 'float'", fieldIndex, line);
         }