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-rw-r--r--nixpkgs/pkgs/development/libraries/protobuf/generic-v3.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/libraries/protobuf/generic-v3.nix b/nixpkgs/pkgs/development/libraries/protobuf/generic-v3.nix
index cbe669ffd377..9dc7f70c2fe2 100644
--- a/nixpkgs/pkgs/development/libraries/protobuf/generic-v3.nix
+++ b/nixpkgs/pkgs/development/libraries/protobuf/generic-v3.nix
@@ -33,7 +33,7 @@ mkProtobufDerivation = buildProtobuf: stdenv: stdenv.mkDerivation {
   nativeBuildInputs = [ autoreconfHook buildPackages.which buildPackages.stdenv.cc buildProtobuf ];
 
   buildInputs = [ zlib ];
-  configureFlags = if buildProtobuf == null then [] else [ "--with-protoc=${buildProtobuf}/bin/protoc" ];
+  configureFlags = lib.optional (buildProtobuf != null) "--with-protoc=${buildProtobuf}/bin/protoc";
 
   enableParallelBuilding = true;