Don't display fortune over 128 characters

hosts/home.nix

@@ -100,6 +100,15 @@ in
       # config.allowUnfree seems to not apply to nix-env, so is provided explicitly
       latest = "NIXPKGS_ALLOW_UNFREE=1 nix-env -f https://github.com/NixOS/nixpkgs/archive/master.tar.gz -iA";
     };
-    bashrcExtra = "pfetch\nfortune";
+    bashrcExtra = ''
+      pfetch
+      while true; do
+        f=`fortune`
+        if [ ''${#f} -lt 128 ]; then
+          echo "''${f}"
+          break
+        fi
+        done
+    '';
   };
 }