Miscellaneous cleanups

src/libexpr-tests/value/print.cc

@@ -10,7 +10,7 @@ using namespace testing;
 struct ValuePrintingTests : LibExprTest
 {
     template<class... A>
-    void test(Value v, std::string_view expected, A... args)
+    void test(Value & v, std::string_view expected, A... args)
     {
         std::stringstream out;
         v.print(state, out, args...);
@@ -625,10 +625,11 @@ TEST_F(ValuePrintingTests, ansiColorsAttrsElided)
     vThree.mkInt(3);
 
     builder.insert(state.symbols.create("three"), &vThree);
-    vAttrs.mkAttrs(builder.finish());
+    Value vAttrs2;
+    vAttrs2.mkAttrs(builder.finish());
 
     test(
-        vAttrs,
+        vAttrs2,
         "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; " ANSI_FAINT "«2 attributes elided»" ANSI_NORMAL " }",
         PrintOptions{.ansiColors = true, .maxAttrs = 1});
 }

src/libstore/daemon.cc

@@ -1031,7 +1031,7 @@ void processConnection(ref<Store> store, FdSource && from, FdSink && to, Trusted
     auto [protoVersion, features] =
         WorkerProto::BasicServerConnection::handshake(to, from, PROTOCOL_VERSION, WorkerProto::allFeatures);
 
-    if (protoVersion < 256 + 18)
+    if (protoVersion < MINIMUM_PROTOCOL_VERSION)
         throw Error("the Nix client version is too old");
 
     WorkerProto::BasicServerConnection conn;

src/libstore/dummy-store.cc

@@ -148,7 +148,7 @@ struct DummyStoreImpl : DummyStore
     /**
      * The dummy store is incapable of *not* trusting! :)
      */
-    virtual std::optional<TrustedFlag> isTrustedClient() override
+    std::optional<TrustedFlag> isTrustedClient() override
     {
         return Trusted;
     }

src/libstore/filetransfer.cc

@@ -622,7 +622,7 @@ struct curlFileTransfer : public FileTransfer
         void quit()
         {
             quitting = true;
-            /* We wil not be processing any more incomming requests */
+            /* We wil not be processing any more incoming requests */
             while (!incoming.empty())
                 incoming.pop();
         }

src/libstore/globals.cc

@@ -150,7 +150,7 @@ std::vector<Path> getUserConfigFiles()
     return files;
 }
 
-unsigned int Settings::getDefaultCores() const
+unsigned int Settings::getDefaultCores()
 {
     const unsigned int concurrency = std::max(1U, std::thread::hardware_concurrency());
     const unsigned int maxCPU = getMaxCPU();

src/libstore/include/nix/store/globals.hh

@@ -77,7 +77,7 @@ public:
 
     Settings();
 
-    unsigned int getDefaultCores() const;
+    static unsigned int getDefaultCores();
 
     Path nixPrefix;
 
@@ -427,7 +427,7 @@ public:
         R"(
           If set to `true`, Nix instructs [remote build machines](#conf-builders) to use their own [`substituters`](#conf-substituters) if available.
 
-          It means that remote build hosts fetches as many dependencies as possible from their own substituters (e.g, from `cache.nixos.org`) instead of waiting for the local machine to upload them all.
+          It means that remote build hosts fetch as many dependencies as possible from their own substituters (e.g, from `cache.nixos.org`) instead of waiting for the local machine to upload them all.
           This can drastically reduce build times if the network connection between the local machine and the remote build host is slow.
         )"};
 
@@ -503,7 +503,7 @@ public:
           by the Nix account, its group should be the group specified here,
           and its mode should be `1775`.
 
-          If the build users group is empty, builds areperformed under
+          If the build users group is empty, builds are performed under
           the uid of the Nix process (that is, the uid of the caller if
           `NIX_REMOTE` is empty, the uid under which the Nix daemon runs if
           `NIX_REMOTE` is `daemon`). Obviously, this should not be used
@@ -847,8 +847,8 @@ public:
           4.  The path to the build's scratch directory. This directory
               exists only if the build was run with `--keep-failed`.
 
-          The stderr and stdout output from the diff hook isn't
-          displayed to the user. Instead, it print to the nix-daemon's log.
+          The stderr and stdout output from the diff hook isn't displayed
+          to the user. Instead, it prints to the nix-daemon's log.
 
           When using the Nix daemon, `diff-hook` must be set in the `nix.conf`
           configuration file, and cannot be passed at the command line.

src/libstore/include/nix/store/worker-protocol.hh

@@ -13,6 +13,7 @@ namespace nix {
 /* Note: you generally shouldn't change the protocol version. Define a
    new `WorkerProto::Feature` instead. */
 #define PROTOCOL_VERSION (1 << 8 | 38)
+#define MINIMUM_PROTOCOL_VERSION (1 << 8 | 18)
 #define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
 #define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
 
@@ -152,6 +153,7 @@ enum struct WorkerProto::Op : uint64_t {
     AddIndirectRoot = 12,
     SyncWithGC = 13,
     FindRoots = 14,
+    // ExportPath = 16, // removed
     QueryDeriver = 18, // obsolete
     SetOptions = 19,
     CollectGarbage = 20,
@@ -161,6 +163,7 @@ enum struct WorkerProto::Op : uint64_t {
     QueryFailedPaths = 24,
     ClearFailedPaths = 25,
     QueryPathInfo = 26,
+    // ImportPaths = 27, // removed
     QueryDerivationOutputNames = 28, // obsolete
     QueryPathFromHashPart = 29,
     QuerySubstitutablePathInfos = 30,

src/libstore/remote-store.cc

@@ -73,7 +73,7 @@ void RemoteStore::initConnection(Connection & conn)
         try {
             auto [protoVersion, features] =
                 WorkerProto::BasicClientConnection::handshake(conn.to, tee, PROTOCOL_VERSION, WorkerProto::allFeatures);
-            if (protoVersion < 256 + 18)
+            if (protoVersion < MINIMUM_PROTOCOL_VERSION)
                 throw Error("the Nix daemon version is too old");
             conn.protoVersion = protoVersion;
             conn.features = features;

src/nix/env.cc

@@ -1,6 +1,7 @@
-#include <unordered_set>
 #include <queue>
 
+#include <boost/unordered/unordered_flat_set.hpp>
+
 #include "nix/cmd/command.hh"
 #include "nix/expr/eval.hh"
 #include "run.hh"

src/nix/main.cc

@@ -256,8 +256,8 @@ static void showHelp(std::vector<std::string> subcommand, NixArgs & toplevel)
     vDump->mkString(toplevel.dumpCli());
 
     auto vRes = state.allocValue();
-    state.callFunction(*vGenerateManpage, state.getBuiltin("false"), *vRes, noPos);
-    state.callFunction(*vRes, *vDump, *vRes, noPos);
+    Value * args[]{&state.getBuiltin("false"), vDump};
+    state.callFunction(*vGenerateManpage, args, *vRes, noPos);
 
     auto attr = vRes->attrs()->get(state.symbols.create(mdName + ".md"));
     if (!attr)