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-rwxr-xr-xscripts/nix-build.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/scripts/nix-build.in b/scripts/nix-build.in
index 168730bbc92d..fff71021fbf8 100755
--- a/scripts/nix-build.in
+++ b/scripts/nix-build.in
@@ -149,7 +149,8 @@ for (my $n = 0; $n < scalar @ARGV; $n++) {
     }
 }
 
-@exprs = ("./default.nix") if scalar @exprs == 0;
+@exprs = ("shell.nix") if scalar @exprs == 0 && $runEnv && -e "shell.nix";
+@exprs = ("default.nix") if scalar @exprs == 0;
 
 $ENV{'IN_NIX_SHELL'} = 1 if $runEnv;