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-rw-r--r--pkgs/development/tools/ocaml/camlp4/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/tools/ocaml/camlp4/default.nix b/pkgs/development/tools/ocaml/camlp4/default.nix
index 20373c923e7..ae253180aee 100644
--- a/pkgs/development/tools/ocaml/camlp4/default.nix
+++ b/pkgs/development/tools/ocaml/camlp4/default.nix
@@ -39,6 +39,6 @@ stdenv.mkDerivation {
   meta = with stdenv.lib; {
     description = "A software system for writing extensible parsers for programming languages";
     homepage = https://github.com/ocaml/camlp4;
-    platforms = ocaml.meta.platforms;
+    platforms = ocaml.meta.platforms or [];
   };
 }