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-rw-r--r--pkgs/build-support/rust/build-rust-crate/test/rcgen-crates.nix4
1 files changed, 1 insertions, 3 deletions
diff --git a/pkgs/build-support/rust/build-rust-crate/test/rcgen-crates.nix b/pkgs/build-support/rust/build-rust-crate/test/rcgen-crates.nix
index e15390c3ffa8..ed273c01d26d 100644
--- a/pkgs/build-support/rust/build-rust-crate/test/rcgen-crates.nix
+++ b/pkgs/build-support/rust/build-rust-crate/test/rcgen-crates.nix
@@ -24,9 +24,7 @@
 , release ? true
   # Additional crate2nix configuration if it exists.
 , crateConfig
-  ? if builtins.pathExists ./crate-config.nix
-    then pkgs.callPackage ./crate-config.nix {}
-    else {}
+  ? lib.optionalAttrs (builtins.pathExists ./crate-config.nix) (pkgs.callPackage ./crate-config.nix {})
 }:
 
 rec {