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-rw-r--r--pkgs/applications/science/logic/ott/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/applications/science/logic/ott/default.nix b/pkgs/applications/science/logic/ott/default.nix
index a00c565fb4e0..b8197aaa4123 100644
--- a/pkgs/applications/science/logic/ott/default.nix
+++ b/pkgs/applications/science/logic/ott/default.nix
@@ -29,6 +29,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "A tool for the working semanticist";
+    mainProgram = "ott";
     longDescription = ''
       Ott is a tool for writing definitions of programming languages and
       calculi. It takes as input a definition of a language syntax and