* nix-instantiate: return exit status 100 to denote a permanent build

  failure.  The build hook can use this to distinguish between
  transient and permanent failures on the remote side.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index 7c2d9203063e..68f145820361 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -393,7 +393,7 @@ int main(int argc, char * * argv)
         printMsg(lvlError, format("error: %1%%2%") % (showTrace ? e.prefix() : "") % e.msg());
         if (e.prefix() != "" && !showTrace)
             printMsg(lvlError, "(use `--show-trace' to show detailed location information)");
-        return 1;
+        return e.status;
     } catch (std::exception & e) {
         printMsg(lvlError, format("error: %1%") % e.what());
         return 1;