package.nix: add clear to $PATH

nix/package.nix

@@ -2,6 +2,7 @@
 , python3Packages
 , makeWrapper
 , less
+, toybox
 }:
 let
   pyproject = builtins.fromTOML (builtins.readFile ../pyproject.toml);
@@ -31,7 +32,10 @@ python3Packages.buildPythonApplication {
 
   postInstall = ''
     wrapProgram $out/bin/dibbler \
-      --prefix PATH : "${lib.makeBinPath [ less ]}"
+    --prefix PATH : "${lib.makeBinPath [
+      less
+      toybox # Needs `clear`
+    ]}"
   '';
 
   meta = {