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-rw-r--r--pkgs/applications/science/logic/acgtk/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/applications/science/logic/acgtk/default.nix b/pkgs/applications/science/logic/acgtk/default.nix
index 0fd90ac13b6..fa890c03b6f 100644
--- a/pkgs/applications/science/logic/acgtk/default.nix
+++ b/pkgs/applications/science/logic/acgtk/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation {
     homepage = "http://www.loria.fr/equipes/calligramme/acg";
     description = "A toolkit for developing ACG signatures and lexicon";
     license = licenses.cecill20;
-    platforms = ocaml.meta.platforms;
+    platforms = ocaml.meta.platforms or [];
     maintainers = [ maintainers.jirkamarsik ];
   };
 }