Merge branch 'master' into core-updates

2 files changed, 16 insertions, 21 deletions

diff --git a/nix/nix-daemon/guix-daemon.cc b/nix/nix-daemon/guix-daemon.cc
index f47d142612..6f9c404c8d 100644
--- a/nix/nix-daemon/guix-daemon.cc
+++ b/nix/nix-daemon/guix-daemon.cc
@@ -466,23 +466,15 @@ main (int argc, char *argv[])
     {
       settings.processEnvironment ();
 
-      /* Use our substituter by default.  */
-      settings.substituters.clear ();
+      /* Enable substitutes by default.  */
       settings.set ("build-use-substitutes", "true");
 
       /* Use our substitute server by default.  */
       settings.set ("substitute-urls", GUIX_SUBSTITUTE_URLS);
 
 #ifdef HAVE_DAEMON_OFFLOAD_HOOK
-      /* Use our build hook for distributed builds by default.  */
+      /* Use 'guix offload' for distributed builds by default.  */
       settings.useBuildHook = true;
-      if (getenv ("NIX_BUILD_HOOK") == NULL)
-	{
-	  std::string build_hook;
-
-	  build_hook = settings.nixLibexecDir + "/offload";
-	  setenv ("NIX_BUILD_HOOK", build_hook.c_str (), 1);
-	}
 #else
       /* We are not installing any build hook, so disable it.  */
       settings.useBuildHook = false;
@@ -497,14 +489,6 @@ main (int argc, char *argv[])
       printMsg(lvlDebug,
 	       format ("build log compression: %1%") % settings.logCompression);
 
-      if (settings.useSubstitutes)
-	settings.substituters.push_back (settings.nixLibexecDir
-					 + "/substitute");
-      else
-	/* Clear the substituter list to make sure nothing ever gets
-	   substituted, regardless of the client's settings.  */
-	settings.substituters.clear ();
-
       if (geteuid () == 0 && settings.buildUsersGroup.empty ())
 	fprintf (stderr, _("warning: daemon is running as root, so \
 using `--build-users-group' is highly recommended\n"));
diff --git a/nix/nix-daemon/nix-daemon.cc b/nix/nix-daemon/nix-daemon.cc
index 56137701a1..1163a249d1 100644
--- a/nix/nix-daemon/nix-daemon.cc
+++ b/nix/nix-daemon/nix-daemon.cc
@@ -1,3 +1,4 @@
+#include "config.h"
 #include "shared.hh"
 #include "local-store.hh"
 #include "util.hh"
@@ -580,8 +581,14 @@ static void performOp(bool trusted, unsigned int clientVersion,
             settings.set("build-max-silent-time", std::to_string(readInt(from)));
         }
 
-        if (GET_PROTOCOL_MINOR(clientVersion) >= 2)
+        if (GET_PROTOCOL_MINOR(clientVersion) >= 2) {
+#ifdef HAVE_DAEMON_OFFLOAD_HOOK
             settings.useBuildHook = readInt(from) != 0;
+#else
+	    readInt(from);			  // ignore the user's setting
+#endif
+	}
+
         if (GET_PROTOCOL_MINOR(clientVersion) >= 4) {
             settings.buildVerbosity = (Verbosity) readInt(from);
             logType = (LogType) readInt(from);
@@ -590,8 +597,12 @@ static void performOp(bool trusted, unsigned int clientVersion,
         if (GET_PROTOCOL_MINOR(clientVersion) >= 6
             && GET_PROTOCOL_MINOR(clientVersion) < 0x61)
             settings.set("build-cores", std::to_string(readInt(from)));
-        if (GET_PROTOCOL_MINOR(clientVersion) >= 10)
-            settings.set("build-use-substitutes", readInt(from) ? "true" : "false");
+        if (GET_PROTOCOL_MINOR(clientVersion) >= 10) {
+	    if (settings.useSubstitutes)
+		settings.set("build-use-substitutes", readInt(from) ? "true" : "false");
+	    else
+		readInt(from);			// substitutes remain disabled
+	}
         if (GET_PROTOCOL_MINOR(clientVersion) >= 12) {
             unsigned int n = readInt(from);
             for (unsigned int i = 0; i < n; i++) {