* `nix-store --build' now builds its arguments in parallel instead of

  sequentially (within the limits set by `--jobs').  This should
  greatly improve the utilisation of the build farm when doing Nixpkgs
  builds.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/nix-env/main.cc b/src/nix-env/main.cc
index 4d2ad0c8978e..d332108cc58d 100644
--- a/src/nix-env/main.cc
+++ b/src/nix-env/main.cc
@@ -223,7 +223,9 @@ void createUserEnv(EvalState & state, const DrvInfos & drvs,
     
     /* Realise the resulting store expression. */
     debug(format("building user environment"));
-    buildDerivation(topLevelDrv.drvPath);
+    PathSet drvPaths;
+    drvPaths.insert(topLevelDrv.drvPath);
+    buildDerivations(drvPaths);
 
     /* Switch the current user environment to the output path. */
     debug(format("switching to new user environment"));