diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 65a90980f2ee6..926cd790723f8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7644,6 +7644,8 @@ in
 
   llvmPackages_latest = llvmPackages_8;
 
+  lorri = throw "lorri is not stable yet. Please go to https://github.com/target/lorri and follow the installation instructions there, for the time being.";
+
   manticore = callPackage ../development/compilers/manticore { };
 
   mercury = callPackage ../development/compilers/mercury { };