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-rwxr-xr-xsrc/nix-build/nix-build.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index c67148728722..71ef5af86af9 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -81,7 +81,8 @@ int main(int argc, char ** argv)
         auto pure = false;
         auto fromArgs = false;
         auto packages = false;
-        auto interactive = true;
+        // Same condition as bash uses for interactive shells
+        auto interactive = isatty(STDIN_FILENO) && isatty(STDERR_FILENO);
 
         Strings instArgs;
         Strings buildArgs;